Specification:Product Number: ZHWG15LMDimensions: 80×80×41.5mm (3.15×3.15×1.63 inches)Input Voltage: 220~240V AC, 50Hz/60Hz - Operating Temperature: -10°C~+50°CWorking Humidity: 0~95% RH, no condensation - Compliance with Executive Standard: GB 7000.212-2008Wireless protocols supported: Wi-Fi i - EEE 802.11 b/g/n 2.4GHz, Zigbe 3.0 IEEE 802.15.4Features:1. Zigbe 3.0 Support: Connects up to 128 devices, supporting all the latest Aqara devices with a fast, stable, and energy-efficient technology.2. Built-in Speaker: The 2-watt speaker can be used as alarm, doorbell, or via configurable automations.3. Multiple Ecosystem Support: Apart from Aqara Home, it supports Chinese version of Mi Home and other third-party integrations.4. Enhanced Wi-Fi Connectivity: With its powerful 2x2 MIMO WiFi antenna, it provides faster, more reliable connection.5. Security Focus: It supports all 4 HomeKit alarm modes and a special Aqara Alert System for advanced security protections. - Package Includes:1x Gateway M1S1x Instr