1. Installation: no neutral wire smart switch. Single pole (NOT 3 way smart switch). A Zigbee Gateway smart home hub is necessary.
2. Design: Compact design to fit your congested outlet box, fit standard decorative wall plate (1-Gang, 2-gang, etc.) with another smart wall switch
3. Alexa Light Switch: compatible with Alexa and Google Home for Voice control like other smart home gadgets
4. Specifications: 120VAC,60Hz, support minimum 5W LED, ON/OFF relay smart switches (not smart dimmer switch)
5. Zigbee Hub: Work with standard Zigbee hubs like Samsung Smartthings, Hubitat, SmartLife. Home automation with other smart home products.