About this item ✽Aqara Hub M2 requires 2. 4 GHz Wi-Fi. One Aqara Hub M2 can connect up to 128 Aqara zigbee devices (Aqara Zigbee repeaters such as LED Strip T1, Smart Plug, Wall Switch(with neutre)are required). Hub M2 only support aqara zigbee child device but not aqara thread devices or zigbee devices from other brands. 360° Infrared Control: Control your existing IR devices such as fans, air conditioners, TVs from any part of your room by voice and via home automations (indoor use only). Ethernet RJ45 Port & USB Power: Wired connection via Ethernet RJ45 for extra stability and lower response time. More flexible installation with USB power (power bank with pass-through charging is advised). Home Automation and Alarm System: Works with all Aqara devices to create a comprehensive, smart home automation system. The Aqara Hub M2 is equipped with a built-in speaker that can be used in a variety of ways: security alerts, doorbell, alarm clock, and configurable ringtones (Aqara child devices are required). All-Round Compatibility: The Aqara Hub M2 ensures seamless integration of your Aqara devices with a variety of smart home ecosystems and voice assistants, including Apple HomeKit, Google Assistant, Alexa, IFTTT, and more (𝐞𝐧𝐬𝐮𝐫𝐞 𝐭𝐡𝐞 𝐌𝟐 𝐢𝐬 𝐮𝐩𝐝𝐚𝐭𝐞𝐝 𝐭𝐨 𝐭𝐡𝐞 𝐥𝐚𝐭𝐞𝐬𝐭 𝐟𝐢𝐫𝐦𝐰𝐚𝐫𝐞). Note: Compatibility varies by sub-device. Please check each device's specifications for platform support. › Brand: Aqara Color: Black-M2 Power Source: DC Compatible Devices: Apple HomeKit, Alexa, Google Assistant, IFTTT, Zigbee 3. 0 devices Item dimensions L x W x H: 3. 94 x 3. 94 x 1. 12 inches