Elitech HVAC refrigerant leak detectors are economic and practical with advanced infrared or heated diode leak detection technology.HVAC Leak Detectors can also be used to detect leaks in other systems and storage or recovery containers. Freon Leak Detectors are easy to operate, reliable in performance and compact in size. Elitech infrared refrigerant leak detectors is long-life and low cost but with outstanding performance. Our HVAC refrigerant freon leak detectors are designed exclusively to make the HVACR Technician's job easier, faster, safer and more efficient. We set out to develop the best refrigerant leak detector for HVACR. When the detection result is not stable, lower the sensitivity level to adapt to the environment. Elitech sensitivity adjustable portable HVAC refrigerant freon leak detectors with six-hour battery life let you work all day before recharging.