I have a switch with indicator in my basement for a shared backyard light. It appears to work fine. The backyard is a shared yard with neighbors in downstairs unit and I would like them to be able to turn the light on/off any time they like. To this end we are going to install a wireless relay with one of those self-activated switches. I want to understand what is currently set up before we start changing stuff.
The switch is wired right now like this. There are two white wires and two black wired to the switch. There are two bare wires twisted together in the back of the box. The switch says Leviton and googling turns up Leviton 5226-ISP that looks identical, but mine might be an older model.
There's no obvious ground screw on the switch, So one of these black ones is hot, the other is load, and then white is neutral, is that correct?
Are the wires twisted together inside the box, the ground wires?
The wiring diagrams I find for the switch online don't show two neutral wires attached to the switch so that's where I got confused.