The relay is a double pole so it switches both sides of the 240 at the same time. It has two connectors for the 120v and 4 connections (2 for each of the 240 lines).? The coil on the relay is activated by 120 volts from the smart switch.? Since I operate the whole station remotely I can activate and deactivate the smart switches easily from the cell phone.?
Paul Sobon 1700 Bassett Street, #1904 Denver, CO 80202