Amprobe RLD-1 [3474968] Refrigerant Leak Detector.The Amprobe RLD-1 Refrigerant Leak Detector allows users to troubleshoot air conditioning systems quickly and accurately. State of the art technology assuring precise, unambiguous readings, the RLD1 makes leak finding across a wide variety of refrigerants easy and quick. The RLD-1 pinpoints the place of leaks of the refrigerant in air-conditioning systems. It includes a suction pump which provides instant response and quick sensor clearing to speed up the leak detection process. The RLD-1 supplies cutting edge accuracy and is simnple to read with it's tri-colored LED display and audio that makes it easy indicate leaks.