Belkin Wemo Smart Light Switches 2-pack of Wi-Fi®-enabled smart light switches at Crutchfield
Amazon.com: Wemo Smart Light Switch with Thread - Smart Switch for Apple HomeKit - 3 Way Switch Compatible - Smart Home Devices - HomeKit Light Switch - Apple Home - Requires Neutral
Belkin Official Support - Setting up the Wemo Smart Light Switch, F7C030
Wemo WiFi Smart Light Switch
Smart Light Switch with Thread | Belkin US
Amazon.com: WeMo Smart Light Switch 2ND Gen : Everything Else