Mini body, massive power: No matter what type of junction box you use, the switch can be installed inside it to make your wall switch smart. Extend external switch connection: Works with various types of external switches to control your devices, such as the SPDT light switch. Widely used, works safely: Works with more brands, accredited by the Zigbee Alliance, ensuring powerful compatibility for more supported hubs. Safety in both use and privacy: The shell is fire-resistant and flame-retardant, enhancing 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 to prying eyes. ZigBee 3.0 protocol, one-press pairing: Adopts ZigBee3.0 protocol, you can quickly add it to SONOFF ZBBridge and get them paired via a single press in 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