Display Type : Digital Alarm Type : Audible Beep Sound Level : 85 DB Sensor Type : Electrochemical Power Source : Battery Power Supply : 3 V Color : White Dimensions : 0.94 In L X 4.75 In W X 2.63 In H Includes : Battery
Alarm Type : Audible Sound Level : 85 DB Sensor Type : Ionization Power Source : Battery Power Supply : 9 V Operating Temperature : 40 To 100 Deg F Color : White Dimensions : 7 In L X 8-1/2 In W X 2-1/2 In H Includes : 9 V Battery