Most smart switches need a neutral wire, which allows your smart light switch keep powered up and connected to Wi-Fi always. In case your home was constructed just before 1985 (plus the wiring hasn’t been up-to-date), you may perhaps deficiency that crucial wire. If that’s the situation, then I recommend https://smart-power-points44108.blogofchange.com/35423763/wiring-to-lights-an-overview