Water Detection System Alarm Sound Level 90 dB Alarm Unit Dimensions 2.40 in W x 4.28 in D x 1.38 in H Includes Batteries No Maximum Operating Temperature 105 Degrees F Mounting Location Surface Operating Voltage 9V DC Detector Type Water Detector and Alarm Power Source Battery Alert Type Sound Battery Chemistry Alkaline Features Moisture Sensing Electronics Audible Warning Sound Intensity 90 dB @ 10 Feet Shock Resistant From 4 Ft Drop Onto Concrete Includes Instructions WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov -