In the diagrams below the dotted rectangle represents a smart switch.
Automated light switch no neutral.
120 volt 7 day programmable indoor motor and light switch timer.
For those of us using led fluorescent or some other energy efficient bulbs under 20w a neutral is required.
Why is no neutral a problem for smart switches.
Installation as with most other smart switches requires a neutral wire but it s fairly straightforward.
However you run into a problem when you have a smart switch.
Like our runner up the tp link smart wi fi light switch hs200 needs a neutral wire.
Yes there are a few read very very very few switches that don t require a neutral but those will limit you to incandescent only.
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1 run a neutral wire.
Lutron maestro motion sensor switch no neutral required 250 watts single pole ms ops2 wh white.
Smart light switch gosund 2 4ghz wifi light switch works with alexa google assistant remote control voice control and schedule neutral wire required single pole no hub required 4 4 out of 5 stars 2 942.
You can set automated schedules control groups of switches and set it to away mode to simulate occupancy.
The most common requirement of any hardwired automated light switch is a neutral wire.
The line voltage goes to the light first then to the switch no neutral both circuits work just fine when you only have a standard mechanical switch.
Option 1 run a neutral wire if you want to use smart switches and don t have a neutral wire in your switch box you can hire an electrician to run a neutral wire between the light.
The switch includes an ambient light sensor so it can be set not to come on in daylight.
Call in an electrician and get him to run a neutral wire running from the light fixture to the switch.
4 5 out of 5 stars 3 117.
120 volt 7 day programmable indoor light switch timer with automatic daylight savings.