Most smart switches demand a neutral wire, which lets your smart light switch remain powered up and linked to Wi-Fi always. If the home was crafted ahead of 1985 (plus the wiring hasn’t been up-to-date), you could absence that essential wire. If that’s the situation, then I like to recommend https://smart-light-switches35937.theideasblog.com/35292221/smart-power-point-fundamentals-explained