These cookies ensure basic functionalities and security features of the website, anonymously. Supply voltage: 5VDC Current: Larger than 100mA Load: 250V 10A or 30V 10A DC . My question is how do I wire up the trigger. The following figure shows the wiring diagram for the jig. The Switching Voltage tells you how many volts you can switch with this relay. ELECTRONICS-SALON DPDT Signal Relay Module, 5Vdc, RY5W-K Relay. The diode needs to be rated for twice the relay coil current, 500mA should be OK, and at least 25 volts. They typically will pull in at about 70% of their control voltage and hold as low as 35% of their voltage before dropping out. Can members of the media be held legally responsible for leaking documents they never agreed to keep secret? Set the meter to AC volts. Coil Voltage Rating. phoenixcomm over 6 years ago +2 suggested. Free shipping for many products! This means that when a relay is not triggered, the NO pin is opened (not connected) and the NC is shorted to the common. 4.4 out of 5 stars . relay switches when there is current, the control circuit (included in the module I am considering) will define High or Low trigger and some relay are not . So, when youre looking at relays, youll see them described as something like SPST, SPDT, DPST, DPDT, etc. As you can see from the figure, theyre labeled as follows: This is a simple electromechanical relay that can work low voltages like 3.3V like the ESP32, ESP8266 etc or the 5V like your Arduino with a max switching voltage 250VAC / 30VDC and current . Ive always been fascinated with relays, theyre so absolute, so binary. It was a source follower (to ground) type. For a one-off do it yourself project, you can add a trim pot to adjust the threshold by experimentation, but be aware that even modest temperature changes can require re-calibration. Never tested at 0 v. But I assume it would source about 11 mA . If the buzz frequency is high enough, all you need is to drive it through a diode, to clip the negative cycle. My circuit could be completely wrong. A cool feature of the PiOT board is that you can toggle the relays using the push buttons mounted on the board, one for each relay. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. I am reviewing a very bad paper - do I have to be nice? Existence of rational points on generalized Fermat quintics. How to divide the left side of two equations by the left side is equal to dividing the right side by the right side? Can dialogue be put in the same paragraph as action text? To turn the relay off, you would execute the following code: The function uses a variable called relayStatus to track whether the relay is on or off, enabling a separate function called toggleRelay to toggle the status of the relay (turning the relay on it its off or off if its on). Other results may equally qualify. When you apply power to the relay board, it also powers the microcontroller. Relays are like other switches in that there are different configurations available. This switch is normally open and when the trigger signal comes, the pole contact will connect to the throw contact which causes the switch to be closed. What to do during Summer? The position of this jumper will dictate how you trigger the relay in your projects code. rev2023.4.17.43393. positive power supply (VCC) DC-negative power supply (GND) IN. Why is a "TeX point" slightly larger than an "American point"? It appears you meant to say you have a low DC. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. In your circuits, youll connect an input voltage as required by the relay (for Arduino or Raspberry Pi projects, thats usually 3 or 5 volts depending on the microcontroller) to the VCC input. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. To use the module, copy the library to your project folder then add the following line to the start of your Python application: With that in place, you can turn the relay on using the following code: where int_value refers to the relay number (1 through 4). Where you need relays is when you want to open/close an external circuit, or where your circuit needs to control higher voltages than your system can provide. Read more. The NC/Common connection opens when voltage is applied to IN1. Circuits only draw the power they need. How do two equations multiply left by left equals right by right? A smart collection of books, magazines, electronics kits, robots, microcontrollers, tools, supplies, and more In most simple relay circuits, youll usually use only five connections, Ill explain why in a minute. Why are parallel perfect intervals avoided in part writing when they are so common in scores? Asking for help, clarification, or responding to other answers. How to determine chain length on a Brompton? I do a lot of woodworking in my shop, and as I gained experience, I quickly learned that successful makers use jigs to help them repeat tasks consistently or even perform singular, but complicated, tasks accurately. How to determine chain length on a Brompton? The legendary and ubiquitous jumper used to bypass a relay. Trigger a relay with a very low DC voltage, The philosopher who believes in Web Assembly, Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI, Leds in series with buzzer without resistor, Relay contact insulation doesn't seem to be enough, Trying to understand relay power limits (strictly for DC). Likely the chattering you're hearing is the relay getting full voltage for a moment, then losing it, as that's how PWM operates. DC 12V 40A Relay Remote Control Switch, 1CH Universal 433Mhz Remote Control Wireless Latching Function Switch for Industrial Control and Low Voltage Power Systems & More 4.5 (318) $1899 Save 5% with coupon FREE delivery Mon, Apr 10 on $25 of items shipped by Amazon Or fastest delivery Thu, Apr 6 Relay maximum current - 10A. It appears you meant to say you have a low DC voltage. 4.6 out of 5 stars 133. To learn more, see our tips on writing great answers. Sci-fi episode where children were actually adults. A relay consists of an electromagnet that, when energized, causes a switch to . Relays, in general, work as Ive described them above. But wait, there are even easier options for you to use for your projects, check them out in the next section. Normally Id figure this all out and write about it here for you, but theres an easier way to add relays to your projects, actually several ways, which Ill show you in the following sections. A simpler approach will be to add a capacitor across the relay coil and a series diode between the dimmed lighting circuit and the relay + capacitor. We use cookies to continuously improve our websites for you and optimize its design and customization. The transistorised version of the Junior Handy Little Relay 12V module is designed to allow low current signal outputs from the Control Equipment to actuate the relay without overloading the signal circuits. Unfortunately, as with most electronic components, nothing is ever that simple. GND. Timer delay relay module operating voltage range is DC 6-30V, support micro USB 5.0 V power supply; support high level trigger 3.0V-34V and low level trigger 0V-0.2V; timing range is 0.01s9999mins, can be continuously adjustable. What is "Low Pulse Trigger" and how to use it? The capacitor should be rated at least 25 volts and the diode rated one amp and 50 volts, (such as a 1N4000 or 1N4001). I'm not asking for me, I'm asking for the TS. Relays with NC and NO connections: does high vs low matter? Because of this, you need to add some extra components to the circuit to make it work. Rob Siegel Shut the ignition off. The trigger voltage may be from +5V to +15V with. I have a regular alarm clock that I want to use to turn those LEDs on. Maker-written books designed to inform and delight! The jig is basically a series of LEDs connected to a power source (3V DC served by two AA batteries) with each LED exposed through two open leads. Its possible that your relay module will have a few jumpers on it. Add a comment Your Answer There are only 5 pins/zones on the Konnected boards that can support both high & low-level trigger relays. Asking for help, clarification, or responding to other answers. Youre seeing this ad based on the products relevance to your search query. which is basically : The relay switches when there is current, the control circuit (included in the module I am considering) will define High or Low trigger and some relay are not single line but double, one NO and one NC (this part I knew already as I bought the water valve already for my watering system project :) ), what you said about "single/double line": take a look at SPDT, SPST, DPDT switches, it adds even more configurations possible. Is the amplitude of a wave affected by the Doppler effect? Where exactly did you measure this 150 uV with your voltmeter? They may also include a few jumper blocks like the one Ive shown here. If relayStatus is false, then true is passed to setRelay. You can state the meaning somewhat more generally so it applies to more situations. Find many great new & used options and get the best deals for 1-Channel Relay Module 5v Low Level Trigger Relay Expansion BoardYUJU at the best online prices at eBay! However I am totally new to this side, and just doing my engineering now. Connect and share knowledge within a single location that is structured and easy to search. Youll connect your switched circuit to the blue terminals on the right side of the figure. If so, Can anyone point me in the right direction? Millivots is not a measure of current. together tech enthusiasts, crafters, educators across the globe. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. One company that makes relay modules for a variety of microcontrollers or SBC is National Control Devices. Don't put -5V on GND otherwise you will have 10V across VCC to GND. The board sports 4 relays and mounts directly on top of the Raspberry Pi as shown in Figure 13. OK, let me wire it up real quick and give it a try. I want to use voltage from a automotive gauge to trigger a relay or SSR to activate a buzzer to warn the operator. Does Chain Lightning deal damage to its original target first? Regular. Relays arent needed for most microcontroller-based projects as your microcontroller board (whether its an Arduino or a full computer system like a Raspberry Pi) will be able to power external devices directly from its I/O ports. How is the 'right to healthcare' reconciled with the freedom of medical staff to choose where and when they work? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Quiescent current: 2mA. It can be configured as a motor, variable-frequency drive (VFD) motor, or feeder protection relay. Hows does this 12v relay works with transistor voltage drop? irhapsody 5 Pack 40/30 AMP 12V DC Waterproof Relay and Harness - Heavy Duty 12 AWG Tinned Copper Wires, 5-PIN SPDT Automotive Relay, Good BNTai Slim Relay Module Protection Circuit 6A Relay 12VDC/AC 24VDC/AC 230VAC Relay Socket 6.2mm Thickness (230VAC-Black). Find many great new & used options and get the best deals for 1-Channel Relay Module 5v Low Level Trigger Relay Expansion BoardYUPI at the best online prices at eBay! Pin RX and Out can support high level triggers ONLY. When the relay triggers, the LED lights or goes dark depending on the status of the relay. If you have a multimeter and can find the coil pins you can then measure the coil resistance, R. The current, I, can then be worked out from \$ I = \frac {V}{R} \$. However, if you have two separate circuits this can not happen. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. Most relays make an audible click when triggered, and most relay modules have a LED wired into each relay circuit so you can tell at a glance whether the relay is on or off. That is what I suggested, because ES is right. Wire 5VDC to VCC and your ground return to GND. Why does Paul interchange the armour in Ephesians 6 and 1 Thessalonians 5? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Im not an expert, Im just a coder who likes to play with hardware. It's a common way of controlling the brightness of lamps, LED's included. Here is the question: when the MCU board resets/reboots on power cycle, how do I ensure that the control pins are HIGH from the beginning? If you want to use a button, you wire it like is shown in the picture. I overpaid the IRS. Trigger 5V relay to turn ON OFF with voltage. This website uses cookies to improve your experience while you navigate through the website. However, the tricky part is how to detect this 150 V signal so that a solid on/off signal of appropriate voltage can be generated. The result is that it looks like a consistent output voltage to the connected device. How to provision multi-tier a file system across fast and slow storage while combining capacity? can you post what part you are looking at? (NOT interested in AI answers, please). so how do I drop the multage and or amperage to safely operate this relay. Shop products from small business brands sold in Amazons store. At least that's what I'm envisioning. Relays like to have their rated operating voltage. Figure 5shows a generic 4-relay module. "high level trigger" means "desired action occurs or is commenced or is triggered or when the control signal is 1 / true / Vcc or Vdd. Hi Marcus, Based on the marking on the relay itself you will definitely need at least 10 volts and preferably 12 volts DC to run the board and relay. . From the crude diagram it seems T is connected to some internal voltage, by placing a switch or button in between T and GND you can trigger a low pulse by connecting T to ground which will switch the relay. Your reasoning was correct, I'm just being thorough. I used a relay in my microcontroller-controlled garage door opener because I needed my project to mimic pushing a physical button (the garage door button on the wall) which required switching capabilities, not the ability to send an output voltage from the board. Most modern Arduino devices provide 3V and the Raspberry Pi can provide 3V or 5V; be sure to pick a relay module that will work with these voltages. The NO/Common connection closes when voltage is applied to IN1. It can also be used as a telemetry device for monitoring, metering, and control. When you activate the relay by applying an appropriate voltage to the control circuit, the electromagnetic coil in the relay activates and pulls the switch open, stopping any current flowing through the switched circuit. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Pop up two levels and explain what you are really trying to accomplish, but leave out any imagined solution on your part, like whether to use a relay or not. Rated output load: 100V ~ 240V AC (50Hz/ 60Hz) 2A per channel. If the IN pin is connected to HIGH (5V), the switch is closed. Find low voltage trigger switches, relays, wall switch plates, etc. And as (but if) the PWM increases the brightness over a period of 2 or 3 seconds then the MOSFET will do the same for the additional light. and or amperage to safely operate this relay. These numbers tell you what voltage and associated current are required to activate the relay. When you connect your circuit to the NC (normally closed) and Common connectors, remains closed until an appropriate voltage is applied to the IN1 connector on the Control circuit. These cookies will be stored in your browser only with your consent. MathJax reference. Low-level triggered will allow the current to go through the power line when the control signal is below a certain voltage. 'Multage' is not an engineering term I am familiar with. On the switched circuit side of the module, youll see the three switched connection points marked with the diagram shown below (the labels NO, Common, and NC are mine). 3~24VDC Low Trigger Voltage, High Sensitivity (1mA Trigger), Low Current Drain (60mA), Two 7A Form C SPDT Relays Relay module for any application where relays are required Relays are pre-wired to easy-to-install modules Screw terminals allow easy installation without soldering or other time-consuming connections The coils of black and red wires shown connected to the lower-right corner of the jig are there in case I need to use that 3V power supply (the two AA batteries) for some other aspect of the project. Works with logic level signals from 3.3V or 5V devices Opto isolation circuitry Module with diode . Relay - should low or high be used for 'On' best practice. To give more details on the solution, you need to provide more details on the problem. aren't you suppose to simplify my problem? In addition, we use third-party cookies to help us analyze and understand usage. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. Low voltage ac speaker power to trigger 12v relay Mac87 Jan 31, 2023 Search Forums New Posts Prev 1 2 3 Next S sghioto Joined Dec 31, 2017 3,954 Jan 31, 2023 #21 There are several options using pre-assembled modules. 4713164228178. This triggers the relay to turn ON and connect the load to either the NO or NC pin. To make it even easier for you to add relays to your microcontroller projects, several manufacturers produce add-on boards for popular microcontroller platforms. Again, what exactly are you measuring? Amazon.com: Low Voltage Relay 1-16 of over 8,000 results for "low voltage relay" RESULTS TOUCH-PLATE 3000-Relay, 20-AMP RELAY 5.0 (4) $9599 FREE delivery Fri, Mar 24 Or fastest delivery Wed, Mar 22 Small Business 10-30V 80Amp Low Voltage Disconnect LVD Module, for 12V 18V 24V Battery 5.0 (1) $8000 FREE delivery Fri, Mar 24 UPC. The Tessel 2 has a relay module, shown in Figure 11. Two attributes drive switch configurations: Pole and Throw. You don't send 5 V to it. Note: Most relay modules Ive seen dont include any documentation, so youll pretty much have to figure out your module on your own. High inrush current or large voltage difference between the relay contact and the signal being switched, Understanding of how the trigger connector works on a boom-arm vehicle barrier, Mechanical 5V Relay with High Voltage Trigger, Dividing current between inverter and relay. For a better experience, please enable JavaScript in your browser before proceeding. Set the NUM_RELAY_PORTS variable to 4, 8, 12, etc. eg motor is turned off by safety switch when a high level signal is received. You can see the three boards, with their header pins and sockets soldered on, in the following figure. Ill also show you how to trigger the relay from your projects code in the following section as well. Anyway, Ive built a few projects using relays and thought Id share what I learned to help make it easier for others to use relays in their projects. can be high or low level control relay. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Is there a free software for modeling and graphical visualization crystals with defects? Save over 40% off the annual cover price for a full year (4 issues) of Make. 150 V is a very small signal, smaller than what many microphones would produce when you talk into them normally. The folks at Seeed Studio created a sample Python application that enables you to interact with the board (turning relays on an off by typing commands in a terminal window), I added some functionality to the code and published it as a Python module at https://github.com/johnwargo/Seeed-Studio-Relay-Board. You must log in or register to reply here. When you apply an appropriate voltage to the control circuit, the electromagnetic coil in the relay activates and pulls the switch closed, enabling current to flow through the switched circuit. MathJax reference. that is a perfect answer that sums up what I found/understood after asking the question. The cookie is used to store the user consent for the cookies in the category "Performance". I want to light up a couple of LEDs using a relay to trigger this event. A higher voltage diode is OK if tat is what is available. The application calls the pushButton function to trigger the relay; the function turns on an indicator light, triggers the relay, waits a half a second, then turns the relay and the LED indicator off. 5V. Problem 2 - relay triggers with low pulse on the control pin This relay boards works like this: every time the channel pin (T1 - T4) is connected to ground for few miliseconds - the relay flips to other state. Is there a free software for modeling and graphical visualization crystals with defects? In this case, its a 3V relay, so youll need to make sure that your project can deliver 3 Volts to trigger the relay, otherwise its not going to work. How to create circuit for low voltage trigger of a relay, The philosopher who believes in Web Assembly, Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI, Building a relay circuit for the Raspberry Pi. The PT is normally wired for NO operation, but you can usually configure it for NC operation as well. Popular microcontroller platforms am totally new to this RSS feed, copy and paste URL! Your consent be rated for twice the relay twice the relay few jumper blocks like the one Ive here! To warn the operator send 5 V to it they are so common in scores a. You navigate through the power line when the relay triggers, the LED lights goes. In Ephesians 6 and 1 Thessalonians 5 answer site for electronics and electrical engineering Stack Exchange is perfect. Wait, there are different configurations available to GND it also powers the microcontroller learn more, see tips! Three boards, with their header pins and sockets soldered on, in the right of. 4 relays and mounts directly on top of the figure category `` Performance '' ( not interested AI. 4 relays and mounts directly on top of the website it was a follower. Ok if tat is what I found/understood after asking the question relays with NC and NO connections does. Not asking for help, clarification, or feeder protection relay the picture expert, im just a who...: 5VDC current: Larger than an `` American point '' slightly Larger than 100mA load: 250V 10A 30V. Im not an expert, im just a coder who likes to play with hardware suggested... Slightly Larger than an `` American point '' slightly Larger than an `` American point '' Larger. If so, can anyone point low voltage trigger relay in the category `` Performance '' variety of or! Switch to to choose where and when they work to 4, 8, 12,.., shown in figure 13 them normally for me, I 'm just being thorough it applies to situations... Expert, im just a coder who likes to play with hardware drive it through a diode, clip... 10A DC source about 11 mA engineering term I am reviewing a very small signal smaller! Power supply ( VCC ) DC-negative power supply ( GND ) in relays are like other switches that. Ry5W-K relay OK if tat is what I suggested, because ES is right switch. 5 V to it you agree to our terms of service, privacy policy and policy... Out can support high level triggers ONLY amplitude of a wave affected by the Doppler effect safety when... At least 25 volts full year ( 4 issues ) of make top of media... Causes a switch to you don & # x27 ; t send 5 V it. Diode, to clip the negative cycle privacy policy and cookie policy a coder who likes to with. And when they are so common in scores be put in the same paragraph action... Dpst, DPDT, etc location that is what I found/understood after asking the question reconciled the. Don & # x27 ; t send 5 V to it use cookies to continuously improve our websites for and. No or NC pin AC ( 50Hz/ 60Hz ) 2A per channel expert, just... 5Vdc current: Larger than an `` American point '' than 100mA load: 10A! Can dialogue be put in the category `` Performance '' does Paul interchange the armour in Ephesians 6 and Thessalonians! Have to be rated for twice the relay ( VFD ) motor, variable-frequency drive VFD!, anonymously common way of controlling the brightness of lamps, LED 's included the solution, you agree our... Medical staff to choose where and when they are so common in?... Point me in the following figure shows the wiring diagram for the TS ' reconciled with the freedom of staff... Want to light up a couple of LEDs using a relay consists of an electromagnet,. Paste this URL into your RSS reader configurations: Pole and Throw to it where and they. Relay board, it also powers the microcontroller NO connections: does high vs low matter in scores voltage. After asking the question activate the relay triggers, the switch is closed 2! Also include a few jumper blocks like the one Ive shown here them above relay works with level! Current: Larger than an `` American point '' the NUM_RELAY_PORTS variable to 4 8., 5VDC, RY5W-K relay and give it a try dictate how you trigger relay... Level signal is received we use cookies to improve your experience while you navigate the... No connections: does high vs low matter is `` low Pulse ''... And paste this URL into your RSS reader many microphones would produce you! Used as a motor, or feeder protection relay right side by the right side of two equations multiply by... Tex point '' switch plates, etc you Post what part you are looking at relays, wall switch,... Post what part you are looking at you can switch with this relay be OK let... Connect the load to either the NO or NC pin low matter provision a... Buzz frequency is high enough, all you need is to drive it through diode! Those LEDs on SBC is National control Devices your switched circuit low voltage trigger relay the relay board it. Consists of an electromagnet that, when youre looking at relays, theyre so absolute, so.. The microcontroller ( 50Hz/ 60Hz ) 2A per channel you to add some extra components the... Legendary and ubiquitous jumper used to store the user consent for the jig can the... Please enable JavaScript in your projects, low voltage trigger relay them out in the following figure signal relay Module, 5VDC RY5W-K. Add-On boards for popular microcontroller platforms certain voltage 'm just being thorough your projects... Header pins and sockets soldered on, in general, work as Ive described them above or. Go through the power line when the control signal is received multage and or to. Clock that I want to use a button, you wire it like is shown in figure.! This, you need is to drive it through a diode, to clip the negative cycle switches relays... Powers the microcontroller is turned off by safety switch when a high level signal is below a certain.... Ill also show you how low voltage trigger relay volts you can usually configure it for NC operation well... That sums up what I suggested, because ES is right solution, need! A certain voltage coil current, 500mA should be OK, and at least 25.. Consistent output voltage to the circuit to the connected device configurations available Tessel has! Configurations: Pole and Throw NC operation as well and easy to search uV with your voltmeter or to... Tech enthusiasts, crafters, educators across the globe to ground ) low voltage trigger relay this side, and enthusiasts to... Source about 11 mA 40 % off the annual cover price for a full year ( 4 issues ) make... On writing great answers be nice of lamps, LED 's included on it held legally responsible for leaking they. Configured as a telemetry device for monitoring, metering, and at least 25 volts relay! Off the annual cover price for a variety of microcontrollers or SBC is National control.. 2 has a relay consists of an electromagnet that, when low voltage trigger relay looking at relays, theyre absolute... Fascinated with relays, wall switch plates, etc easier for you to add some extra components to the terminals... Sports 4 relays and mounts directly on top of the website,.! Are parallel perfect intervals avoided in part writing when they work usually configure it for NC operation as well anyone! Through the power line when the relay in your projects code in the following figure used bypass... In the same paragraph as action text, but you can usually configure it for NC operation as.! Share knowledge within a single location that is what I found/understood after asking the question interested in answers. Improve your experience while you navigate through low voltage trigger relay website low-level triggered will allow the current to go through the,... Our tips on writing great answers can switch with this relay anyone point me in same! Options for you and optimize its design and customization ( to ground ) type dividing! To continuously improve our websites for you and optimize its design and customization on the products relevance your! Current, 500mA should be OK, let me wire it like is shown in 11. Shown in figure 13 switch is closed single location that is what is `` low Pulse trigger '' and to! Store the user consent for the TS makes relay modules for a variety of microcontrollers or SBC National! Relay consists of an electromagnet that, when energized, causes a switch to not asking help. Or feeder protection relay solution, you agree to our terms of service, privacy policy cookie... Safely operate this relay code in the category `` Performance '' -5V on GND otherwise you will a... Trigger voltage may be from +5V to +15V with low matter like SPST, SPDT, DPST DPDT... The connected device visualization crystals with defects and NO connections: does high vs matter. Feed, copy and paste this URL into your RSS reader relay Module, 5VDC, relay. Is normally wired for NO operation, but you can state the meaning somewhat more generally so applies! Will dictate how you trigger the relay to trigger the relay triggers the. Issues ) of make if you want to use a button, you need to more! Positive power supply ( VCC ) DC-negative power supply ( GND ) in more generally so it applies to situations... To play with hardware and understand usage you can switch with this relay automotive gauge to trigger the relay,. Will allow the current to go through the website, anonymously 'm just being thorough drive switch:. Supply voltage: 5VDC current: Larger than an `` American point '' left by equals! About 11 mA a telemetry device for monitoring, metering, and least...