WIRELESS WATER & FREEZE ALARM, POWER: TWO AA ALKALINE BATTERIES, BATTERY LIFE: CALCULATED TO BE 1 TO 2 YEARS WITH NO ALARMS AND DEFAULT Z-WAVE NETWORK SETTINGS, FREQUENCY RANGE: 908.42MHZ (US), DISTANCE RANGE: MAX 100FT LINE OF SIGHT IN UNOBSTRUCTED ENVIRONMENT, PRODUCT SIZE (LxWxD): 3" X 2.1" X 1.1", PRODUCT WEIGHT: 0.24 LB, OPERATING TEMPERATURE:14F (-10ºC) TO 158F (+70ºC), REPORTED TEMPERATURE: REPORTED TEMPERATURE IS AT THE UNIT AND HAS A +/- 2 DEG ACCURACY, SYSTEM REQUIREMENT:  ANY Z-WAVE ENABLED NETWORK AND CONTROLLER. BATTERIES INCLUDED