On a three-way, there’s an additional terminal, called the “common.” Power is available in on the switch over the typical, then two “traveler” wires join the primary switch to the second on the brass terminals. The switch is simple to add to an existing Wiz system, but has quite constrained https://smart-switches-australia06987.like-blogs.com/34581671/the-best-side-of-safe-electrical-wiring