Bluetooth Remote-Control Lighting, 1-Second Installation on Rocker Switch | True Value
Refoss Smart Wi-Fi In-Wall Switch – Refoss Official Store
Switchmate: Smart Light Switch Installs Over Existing Switch
Vivint Officially Enters the Smart Lighting Category - CEPRO
Anyone aware of a smart switch that can go over the top of an existing light switch? : r/homeassistant
Inovelli - Red Series 2-1 Switch (Z-Wave) - 800 Series Long Range
Third Reality Smart Light Switch (Gen 3 Starter Kit) Control Any Toggle or Rocker Wall Switch, No Wiring Required. 1 ZigBee Switch and 1 Hub. Compatible with Alexa and Google Home. - Walmart.com
SONOFF ZBMINI-L ZigBee Smart Switch No Neutral Wire Required Two-Way Control via eWeLink Voice Control Alexa Google Home Alice - AliExpress
Z-Wave Plus Smart Dimmer Light Switch 3 Way | Built-in Z-Wave Repeater | Works with Existing Regular 3-Way Switch, Zwave Hub Required, Works with SmartThings, Wink, Alexa (ZW31) - Amazon.com