It`s Time to Improve the Control Way of Traditional Central A/C Forgot to turn off the a/c Inconvenient operation Unable to start A/C until getting home Specification Zigbee Mini Hub Size:88*90*27mmPower Supply:DC 5V/1AProtocol:Zigbee HAWireless Channel:2.4GHz Channel 11,14,15,19,20,24,25Encryption:AES-128 Central A/C Controller Size:70*70*20mCableCommunication Interface:RS485Voltage:AC110V-220V ,50HZ/60HZWorking Frequency:2.4GHzWireless Standard:ZigBee,IEEE 802.15.4Networking Mode:ZigBee HA automaticWireless distance:≥100m( in open area)Working Temperature:-20~60℃Working Humidity:80% VRV Central A/C Relay Size:141*96*30mmParts:Power cable, signal wire(two-core shielding wire)Rated Voltage and Frequency:220V/50HZ power supply, current<0.1AInstallation Position: Indoor unit, outdoor unit