Leakage Sensitivity Indicator：LED display panel & audible tone. (LED display is a relative measurement only. Audible tone is the frequency of the received ultrasonic sound divided by 32.)

Frequency Response：20 KHz to 100 Khz.

Power Supply：4x1.5 AAA(UM-4) battery（Batteries not included）

Power Consumption：Approx. DC 25 mA.

Operating Temperature：0 to 50 °C ( 32 to 122 °F ).

Operating Humidity：Max. 80% RH.

Weight：Approx. 140 g/0.31 lb (including battery).