Relay Control Module, Optical coupler Isolated, H/L trigger [Channels]





  • VCC connect to 5V
  • GND connect to GND
  • 1N1-1N8 relay control interface connected MCU’s IO port


  • Get the schematic here.


  • Relay can be placed by 12V or 24V version, and same voltage power supply.
  • Minimium order quantity for this customized is 50pcs.

Additional information

Weight N/A

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4 reviews for Relay Control Module, Optical coupler Isolated, H/L trigger [Channels]

  1. 5 out of 5

    serfieledrag (verified owner)

    Just works, simple way to control light bulb, or another power relay for pump, etc.
    Inductive or capacitive load can damage the relay. Do not overload it.

  2. 5 out of 5

    nfriedly (verified owner)

    Works fantastically, although it was the opposite of what I was expecting at first:

    * When [in] is high, 常开(Always Open) and 公共 (Communal) are connected.
    * When [in] is low, 常闭 (Always Close) and 公共 (Communal) are connected.

  3. 3 out of 5

    Nick (verified owner)

    Great price, but 1/3 of mine had a busted LED when I opened the package up.

  4. 5 out of 5

    Jacques (verified owner)

    Seems OK, but I have not used it yet.

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