The SONOFF ZBMINI Extreme Zigbee Smart Switch ZBMINIL2 is a 1-gang smart switch module that’s designed to convert your existing wall light switch into a smart switch without needing a neutral wire. If you have old electrical installations, with no neutral wires with switches and undersized shallow electrical boxes the ZBMINIL2 is here to help. *Requires a ZigBee Bridge Features: Works with Zigbee motion or window/door sensors for automation and can be installed behind the wall switch. (The controlled lamp must have a minimum power of 3W) Super Tiny Size: The ZBMINIL2 Extreme is the tiniest Zigbee smart switch available and can be easily fitted into the smallest EU-type/86 type/120 type mounting box. Support External Switch: The ZBMINIL2 Extreme works with different types of external switches to control your devices, such as rocker light switches and push button wall switches. Simple and Reliable: As a Zigbee 3.0 switch, the ZBMINIL2 Extreme can combine with Zigbee hubs to form a home LAN. You no longer have to worry about no internet, as you are able to freely control appliances even when the light is as low as 3W. No anti-flicker module is required. Application Scenes: The ZBMINIL2 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, and support setting the smart scene to trigger connected devices to make your life easier. Compatible with more Hubs: ZB Bridge Pro, SmartThingsHub, Amazon Alexa Echo Speaker, NSPanel Pro, ZB Dongle-P/E. Add to Home Assistant: Can be added to home assistant by ZHA and Zigbee2mqtt for local control and OTA of the device. Specifications: Wireless connection: Zigbee 3.0 Casting material: PC V0 Input: 100-240V~50/60Hz 6A Max Output: 100-240V~50/60Hz 6A Max