Features

     Power supply: 9V adapter
     Backup Battery: 600mAh Ni-Mh Rechargeable Battery
     Backup battery life: 18 hours
     Speaker: 1.5W
     Operating temperature: -10 ° C ~ + 45 ° C
     Operating humidity: Up to 85% (non-condensing)
     Dimensions: Ø112 x 49 mm