WL-142 DUOYI DY26A Ultrasonic Leak Detector is a device used to detect liquid and gas leaks. This detector locates leaks using ultrasonic sound waves. The DY26A model is often used in industrial plants, automotive maintenance, air conditioning systems and other areas that require sealing. The device is ideal for detecting leaks in compressed air or gas-powered pipelines, air conditioning systems, refrigerators and similar equipment.