There are some smart light switches and dimmers that do not require a neutral wire. A switch box with no neutral loop will usually only have three wires see image below.
C By Ge Smart Switch Dimmer
Smart light switch no ground. This video shows you how you can still install a smart switch to control your lights fan or any other onoff device. Some occupancy sensing automatic light switchesneed a ground wire but traditional toggle type switches do not. They will usually be colored one black and one white potentially with black stripe. Of its there then just add a new extension to the switch. At ces 2020 the venerable lighting brand looks to build upon a big 2019 with new hardware and a new works with c by ge partner. They can do their job just fine with or without ground.
Smart switch smart light switch work with alexa and google home freecube wifi light switch easy in wall installation no hub required needs neutral wire single pole 24ghz 1 pack white 42 out of 5 stars 183. For more information on wiring network switches see the wiring faq. You should be good to go with any smart switch. I dont recommend it but you can wire a light switch without ground if you have to. Two of the wires will be the current carrying wires that power the light. Yes you can install a smart switch without a neutral wire.
Few people ground regular switches and only newer smart switches require a ground. If the manufacturer instructions say that a neutral should be connected to a specific switch input connecting a ground there again is an intentional code violation. Check at the back of your box for a bare copper wire behind a screw. C by ges new smart switches dont need a hub or a neutral wire. These are great for diy installers looking for an effective smart lighting solution. Chances are you have a ground the contractor just cut it off after terminating it on the screw.
Have an older house with out a neutral wire for your light switches. The key is the dimming feature which turns the flow of power between the light and the switch down to a slight trickle. The green colored screw in the upper left is for the ground wire. For example lutron caseta devices do not use a neutral wire. There are dimmable smart switches on the market that can be installed without a neutral wire.