Features:Super Tiny SizeThe tiniest Zigbee smart switch can be easily fit in the smallest EU-type/86 type/120 type mounting box.Support External Switch Work with different type of external switches to control your devices, like rocker light switch, push button wall switch.etc, no neutral wire required for easy installation & simple use.Simple and ReliableAs a Zigbee 3.0 switch, ZBMINI Extreme can combine with Zigbee hubs to form a home LAN,No longer worry about no internet, you are able to freely control the appliances normally even the light is as low as 3W, no anti-flicker module is required.Application ScenesZBMINI Extreme can achieve two-way control for your staircase light; set countdown/scheduled/loop timers to create your situational life; work well with Amazon Alexa and Google home to turn on/off your light by voice command; support setting the smart scene to trigger connected devices to make your life easier.