A switch box with no neutral loop will usually only have three wires see image below. Putting a rechargeable battery inside the switch to supply the power to the mcu or method 2.
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Smart light switch wiring. Choose a smart light switch. Yes there are a few read very very very few switches that dont require a neutral but those will limit you to incandescent only. Option 1 run a neutral wire. The most common requirement of any hardwired automated light switch is a neutral wire. Remove your old light switch. Learn your existing wall switch and wiring setup.
You should be good to go with any smart switch. In order to design a smart switch to retrofit the existing 2 wire installation its either method 1. Ensure the power is. Thinking out of the box to make mcu work with the 2 wire wiring system. Once you familiarize yourself with your wiring setup choose a smart light switch. For those of us using led fluorescent or some other energy efficient bulbs under 20w a neutral is required.
Smart lighting is a great place to start in building your smart home. Kasa smart light switch by tp link single pole needs neutral wire 24ghz wifi light switch works with alexa and google assistant ul certified 1 pack hs200 white 45 out of 5 stars 6799 limited time deal. If you want to use smart switches and dont have a neutral wire in your switch box you can hire an electrician to run a neutral wire between the light fixture and the switch. 5 things to consider before installing smart light switches. If you open your switch box and you see two white wires joined with a wire nut not connected to the switch you can be fairly sure your switch has a neutral loop. But you should know these four things before installing smart.
Before you purchase a smart light switch youll need to. Neutral wire is required standard wall plate size. Kasa smart light switch by tp link single pole needs neutral wire get this product httpsamznto2of4bhw easy guided install. You can also have an electrician rewire the switch and light fixture which is potentially more expensive.
Gallery of Smart Light Switch Wiring
