1.Size:W180mm H310 V95mm  
													  2.Temp:-5ºC-65ºC 
													  3.Voltage:7V-10V DC 
													  4.working voltage:static current=0,alarm current=100ma 
													  5.alarm:105DB
													  6.low battery warning
													  7.Battery: 6F22 9V Lithium battery