Description
A patented heated diode sensor provides excellent sensitivityHigh/low sensitivity adjustment and automatic zeroingOur best refrigerant leak detector is suited to find most refrigerant leaksEasy one-button operationThe Testo 316-3 is our best refrigerant leak detector yet, that delivers dependable, rugged performance at a great value. The proven heated diode sensor provides great sensitivity down to 0.15 ounces/year including the new refrigerant blends like R-410A, R-407C, and R134-a, allowing you to find the most refrigerant leaks.