This is a good relay board, easy to use and does precisely what I wanted it to do. Wired it to an Arduino that I had assigned relay controls to the relevant pins, was able to correctly control all 4 relays as desired.
I misinterpreted the drawings at first and thought that if the three contacts on each relay are A/B/C, that A/B were connected with no power, and A/C were connected when the relay was powered. Well it turns out I'm a dork, A/B are connected with no power and B/C are connected when the relay is powered. Once I figured that out, making everything work was super simple.
Small bank of LED indicates when each of the 4 relays is powered, since you can hear the clicking but it's nice to have visual feedback about which relay/s made the noise. Good relay shield.
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Descripción del producto
Módulo de relé de 2 canales de 5 V.
Nombre del producto: Módulo de relé de 2 canales. Canal de salida: 2.
Fuente de alimentación: 5 V. Voltaje de carga: AC250 V 10 A, DC30 V 10 A.
Perfecto para electrodomésticos, máquinas de oficina, audio, equipos, automóviles, etc. (Receptor de TV de control remoto, pantalla del monitor, audio, Raspberry Pi equipo de alta velocidad de uso de corriente)
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Material duradero: Selección de material plástico para altas temperaturas y mejor rendimiento de soluciones químicas |
Tamaño total: 1.97 pulgadas x 1.54 pulgadas x 0.63 pulgadas. |
Contenido del paquete: 1 módulo de relé de 2 canales |
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| Precio | US$16.99 | — | US$12.99 | — | — | US$59.99 |
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Opiniones con imágenes
Exactly what I needed
This module is perfect! It comes all soldered and has the screw-in terminals.Like almost all relays of this type it can't handle more than 10 A. In the rest of the world that would be no problem since 230 V breakers trip at 10 A. But in North America, with 15 A and 20 A circuits, this is not going to work. That limits you to devices 1200 W or less.My first project with it is a system to water plants. The pump only requires 4-12 V and probably a few hundred milliamps.By the way, if you want to power bulbs or for many other applications, I recommended using DC voltage. The bulbs will light up just the same, but it will be much less dangerous than dealing with AC.ONE PROBLEM: It lacks labeling of the relay terminals. NO Normally Open, C Common, NC Normally Closed are not printed.ONE GIANT ADVANTAGE: This module compared to others is great because you supply 5V to it through a separate pin, so you don't have to provide the required current on the input pin. The module does that for you. Many boards out there will have only an input pin, which you can't use directly, you'll have to build the missing circuitry so you can control the relay with your Arduino or whatnot. Plus some boards are missing the very important diodes!It also has one status LED per relay so you know what's going on at all times. Note that it is active low.
Opiniones destacadas de los Estados Unidos
Ha surgido un problema al filtrar las opiniones justo en este momento. Vuelva a intentarlo en otro momento.
Calificado en Estados Unidos el 28 de abril de 2019
Color: 2 canalesCompra verificada
Relay Energizes on Ground (0V) Signal and general dimensions
Calificado en Estados Unidos el 28 de abril de 2019
4 Stars for: lack of documentation, general OK build quality, and good price. Would Buy Again. Good product for quick deployment to switch a simple load on/off with a PIC micro-controller. Note that a 0V / GND Signal into any input on the relay board will energize / activate the relay, while a 5V signal will de-energize the relay. Relays listed for 30VDC / 125-250VAC both at 10A, but id never trust something with tiny screw terminals to that extent. There is a set of "VCC / GND" Jumpers on the board. I believe this is used to bridge the circuit from the optocoupler output stage to the to use the optocoupler input voltage. You could probably remove this jumper if you want to isolate the power supplies, but I did not test this. Moving the jumper over 1 position just shorts out the board ;). Lastly, attached some general dimensions of the unit if you're building an enclosure or mount for it.
Calificado en Estados Unidos el 28 de abril de 2019
Imágenes en esta reseña
Calificado en Estados Unidos el 14 de diciembre de 2017
Like almost all relays of this type it can't handle more than 10 A. In the rest of the world that would be no problem since 230 V breakers trip at 10 A. But in North America, with 15 A and 20 A circuits, this is not going to work. That limits you to devices 1200 W or less.
My first project with it is a system to water plants. The pump only requires 4-12 V and probably a few hundred milliamps.
By the way, if you want to power bulbs or for many other applications, I recommended using DC voltage. The bulbs will light up just the same, but it will be much less dangerous than dealing with AC.
ONE PROBLEM: It lacks labeling of the relay terminals. NO Normally Open, C Common, NC Normally Closed are not printed.
ONE GIANT ADVANTAGE: This module compared to others is great because you supply 5V to it through a separate pin, so you don't have to provide the required current on the input pin. The module does that for you. Many boards out there will have only an input pin, which you can't use directly, you'll have to build the missing circuitry so you can control the relay with your Arduino or whatnot. Plus some boards are missing the very important diodes!
It also has one status LED per relay so you know what's going on at all times. Note that it is active low.
Color: 2 canalesCompra verificada
Exactly what I needed
Calificado en Estados Unidos el 14 de diciembre de 2017
This module is perfect! It comes all soldered and has the screw-in terminals.Calificado en Estados Unidos el 14 de diciembre de 2017
Like almost all relays of this type it can't handle more than 10 A. In the rest of the world that would be no problem since 230 V breakers trip at 10 A. But in North America, with 15 A and 20 A circuits, this is not going to work. That limits you to devices 1200 W or less.
My first project with it is a system to water plants. The pump only requires 4-12 V and probably a few hundred milliamps.
By the way, if you want to power bulbs or for many other applications, I recommended using DC voltage. The bulbs will light up just the same, but it will be much less dangerous than dealing with AC.
ONE PROBLEM: It lacks labeling of the relay terminals. NO Normally Open, C Common, NC Normally Closed are not printed.
ONE GIANT ADVANTAGE: This module compared to others is great because you supply 5V to it through a separate pin, so you don't have to provide the required current on the input pin. The module does that for you. Many boards out there will have only an input pin, which you can't use directly, you'll have to build the missing circuitry so you can control the relay with your Arduino or whatnot. Plus some boards are missing the very important diodes!
It also has one status LED per relay so you know what's going on at all times. Note that it is active low.
Imágenes en esta reseña
Opiniones más destacadas de otros países
Mephisto San
Funktioniert
Calificado en Alemania el 7 de marzo de 2024Color: 4 ChannelCompra verificada
Product niet goed geleverd
Beschadigd
Revisado en Bélgica el 27 de octubre de 2023Color: 2 canalesCompra verificada
Product niet goed geleverd
Revisado en Bélgica el 27 de octubre de 2023
Imágenes en esta reseña
Davide Mazzucotelli
Buon prodotto
Calificado en Italia el 10 de diciembre de 2022Color: 2 canalesCompra verificada
P. Hibbert
Works perfectly
Calificado en Canadá el 8 de diciembre de 2020Color: 2 canalesCompra verificada
Francisco
Relación calidad/precio
Calificado en España el 8 de diciembre de 2021Color: 2 canalesCompra verificada
