“Excellent value .. includes a lead for connection.
When switching mains voltage (not recommended) the high voltage seems a bit close to the low voltage circuitry.”
“Ive got the relay working as I want it - A raspberry pi pico GPIO pin on the control side turning a 5V supply to a laser diode on/off at 4Hz. There were no instructions with the relay module for the pin outs, but I found a YT video that was helpful. (I’m just a hobbyist). As expected the relay has an audible click when switching”
