Superior sensitivity to all HFC, HCFC, and CFC gases and blends as well as SF6, Meets all US and International standards for automotive use including SAE J2913 for HFO-1234yf, SAE J2791 for R-134a and European Standard EN14624:2005, New E_MOS sensor technology incorporates a proprietary pulse modulation design to increase both battery and sensor life, Microprocessor controlled sensor electronics utilizing a multi channel signal detection method improves sensitivity while reducing false alarms, Software managed sensor rejuvenation mode, initiated at each startup ensures the highest level of sensitivity every use, for up to 500 hours of detecting leaks of less than, 1 oz per year, Sensitivity remains constant over the life of the sensor, 50 hour battery life (3 ""C"" batteries) Auto Off after 10 minutes, Green LED low battery indicator, 500 hours sensor life, Both visual and audible leak indicators, FREE - UV Clip on Dye Detector Light, SKU: EGLE13064