Wiring the Shelly 1PM

With Shelly 1PM, pin „I“ (Shelly1) is connected internally with pin „L“. Thus, wiring is mostly the same - except the wire between „L“ and „I“ (not present at Shelly 1PM) is obsolete. Otherwise, Shelly 1PM has two „L“ pins (L and L1), which are internally connected. Both pins may be used for connection of live potential or live to a switch. Don’t care if one these pins are left unconnected!

In perspective of switch(es) and pin SW, you may connect the Shelly 1PM similarly to the Shelly 1. As I mentioned before, the only difference between Shelly 1 and 1PM is the missing „I“ pin with Shelly 1PM.