Walmart offers Avatar Controls Smart Light Switch with RF Remote Controller for $16.98 (orig. $29.99). Free shipping on orders over $35.

Product Description:

The AvatarControls smart switch with the RF433 remote controller install as easily like a traditional switch, and connects to your home WiFi in no time through the Smart Life and AvatarControls APP. It is a good idea to start building your own smart home system. Control your lights, ceiling fans, and other fixtures at anywhere anytime with your smartphone. The smart light switch offers 4 control ways: APP, remote, voice, manual. Strong RF signal works through walls and doors without any interference; up to 300ft range in open areas, helps you turn off the living room light from your cozy bed. Enjoy hands-free voice control with Alexa, Google Assistant. Just give a voice control to control the light when you are coming through the kitchen door with your hand full of groceries, sleeping, holding your baby, etc.* Only supports 2.4 GHz Wi-Fi at first time. Neutral wire is required .

Thanks Maggie