
This is a good switch, quite powerful and one of the few options on Amazon. The switch is not waterproof, maybe just waterproof. If you are looking for waterproofing, it is not difficult to find edge sealing. The problem was that all the wires with connectors fit into the case. If I have to do it again I'll solder the connections instead. Also, the picture in the listing above is not correct to show the wiring; That is why I have explained the procedure below. Here is the actual answer for the AC circuit. On the side of the switch, the pins are numbered 1,2, and 3. Insert the wire into the white common wire and connect it to pin #3. Cut the hot black wire and attach the two ends to pins 1 and 2. The green ground wire runs inside the switch body.