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4 channel relay module

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4 channel relay module Customers Reviews

  • Costs less than the individual components

    posted by spookydonut

    All the joints are well soldered, no dry or cracked joints.Terminals for the relays are marked NO/NC on the silkscreening.The circuit design is pretty robust, with the external power supply for driving the relays, you only need a few milliamps to switch all the way up to 10A 250VAC or 30V DC.
    If you don't like or need this specific circuit and want to spin your own, expect to pay ~$20 for the relays alone.
    Use it or strip it for parts, either way this is a great value purchase.
  • Great relay module for arduino

    posted by marekdsk

    Product is small, clearly marked pins. Relay are isolated with optocouplers, which is great, because it does not get any interference. It has leds to show, which relay is in switch state. It is as good as any another, if I will need any more, I will sure buy more. Thank you
    Product is ok, but some people, who dont have any experiences may find it difficult to use, because of missing manual.
    It is good product, which I used on my model railway (controlled by arduino from DX too). It is fast responding, fully compatible for use with arduino. If I will need more, I will order some. Thank you DX. By the way, sorry for my english, it is not my native language.
  • Excellent value for money

    posted by Hendrik24051972

    This relay has an easy and understandable layout. It activates the relays on "high trigger", which I find useful for my applications.
    I wish I had bought the 8 Channel version instead of the 4 Channel. I'm using this one for 1 month, and I already have a destination for each of the 4 relays.I like this module, really works as designed.
    This is value for money. If you want relay functionality for your Arduino, then this is the relay-module you need.
  • Works fine

    posted by tylernt

    Standard 4-channel relay board. Has transistors for the relay coils, and flyback diode protection. Relays close on HIGH signal, just as you would expect.
    Board draws 3mA with no relays closed. Each relay coil draws about 80mA when activated. Red "power" indicator, green relay indicators.
    Not sure what more I can say about it? It's a standard 4-channel relay board.
  • A good product of a affordable price.

    posted by mrajda

    Product of a good quality. Its price is affordable. The size of this product is small enough so that it can be placed for example in small robots. It can drive motors or other high loads thanks to the 10A relays. There is full acces to both terminals of each relay: to one that is « normally open » and to the second that is « normally closed ». This feature is not common in other boards having only normally open terminal.This board has optocouplers ensuring a good isolation between the high voltage circuit and the low voltage system circuit. This ensures safety of the projects based for example on Arduino boards and Raspberry-Pi in which I am currently using it. This is a good idea of placing LEDs indicating current status of relays. The system bus power can be separated from the relay bus power simply using a jumper.
    I would like to have the 8-relay option and another version with 12V relays.
    Probably I will order more of this board.
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