Specs

     Communication protocol: ZigBee Pro Home Automation 1.2
     2.4GHz frequency
     Power supply: 2 AA alkaline batteries, 3V
     Battery life of up to 4 years
     ± 1 ° C sensitivity
     -10 ° C ~ + 45 ° C operating temperature
     Operating humidity up to 85% (non-condensing)
     Dimensions: 85 x 85 x 22 mm