Removing LEDs from relays

Will the following 2 relay modules still work if I desolder the LEDs from them?

Thanks, Alex.

Hey Alex,

Removing the LEDs may cause one or two issues. The optocouplers require a certain current through their LEDs to turn on correctly. The manufacturer of the board will have designed it so that the combination of a 1K resistor and an external LED results in the correct current.

You could replace the LEDs with resistors. But you would have to choose resistors that give the same current as before. The end result is just as much current draw, and no indicators to tell you which outputs are on.


Thanks Owen.