Mini Body, Huge Power: Whatever type of junction box you use, the switch can be installed in it to smarten your wall switch. Widen External Switch Connection: Work with different type of external switches to control your devices, like the SPDT light switch. Use Widely, Work Safely: Work with more brands, accredited by the Zigbee Alliance that ensure a powerful compatibility for more hubs supported. Security in Both Use and Privacy: The shell is fire-proof and flame-retardant shell that improve the fire safety when ZBMINI works with your devices. CE and FCC certified. The ZigBee 3.0 protocol with AES-128 encryption keeps your device data secure and unreadable by prying eyes. ZigBee 3.0 Protocol, One-tap Pairing: Adopts ZigBee3.0 protocol, you can quickly add it to SONOFF ZBBridge, getting them paired via a single tap on the app. Model:MINIR2 Wi-Fi: IEEE 802.11 b/g/n 2.4GHz Input: AC 100-240V 50/60Hz10A Max Material: PC vo output: AC 100-240V 50/60Hz 10A Max Size: 42.6x42.6x20mm.Items from Sheng Xinshun's shop