Ultrasonic Leak Detector for ultrasonic emissions generated by gas, air leaks. Leakage indicator:- Bar LED display panel & audible tone Frequency Response: 20KHz to 100 KHz Power supply:- DC 9V battery Power consumption:- Approx DC 34mA Operating Temp:- 0 degree C to 50 degree C ( 32 degree F to 122 degree F ) Weight:- Approx 260g/ 0. 57 LB ( including battery ) Size:- HWD 255 x70x25 mm ( 10 x 2. 8 x 1. 1 inch ) Accessories included:- Operational manual, Rubber bottle plug with plastic tubing. 1/ 2 inch PVC pipe, Hard carrying case.