Extech RD300 Digital HVAC Refrigerant Leak Detector with LED

Extech RD300 Digital HVAC Refrigerant Leak Detector with LED is designed with a heated diode sensor capable of detecting all of the standard refrigerants used in current heating and cooling systems. The Extech ED300 features an integrated LED probe tip, user-selectable high/med/low sensitivity levels displayed via LEDs, visual and audible indicators with a mute function, and more.