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

(4 customer reviews)


SKU: N/A Categories: , Tags: , ,



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


  • Get the schematic here.

Additional information

Weight N/A

, , ,

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

  1. 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. 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. Nick (verified owner)

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

  4. Jacques (verified owner)

    Seems OK, but I have not used it yet.

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