ALLOSUN Gas Leak Detector Ultrasonic Leak Tester Gas Sniffer Transmitter with Headphone, White

* Power supplied by 2 pieces 9V, 6F22 battery.(Battery Provided) * Quick and simple location of air,water, dust leaks. * Place the transmitter in the vehicle and close the doors and windows. * Trace the detector around outside of the screen, windows and door seals to locate the leak. * Includes adjustable headphone for detector.