New Upgrade Our upgrade LD-200 handheld freon leak detector uses high-precision heating diode detection principle. Compared with traditional refrigerant leak detector, it is more accurate and less susceptible to interference from other gases. The maximum sensitivity is 0.1oz/yr, and the sensor lifespan exceeds 500 hours. After being fully charged (usually 4 hours), it can be used continuously for 8 hours. Multifunctional Design AC Leak detector has three sensitivity modes that can be freely adjusted. It has functions such as self checking on/off, automatic recording of leakage peak, and sensor fault alarm. It uses an LCD screen to more intuitively display the leakage level and equipment status. When a gas leak is detected, the leak detector HVAC LCD screen will display the leak level and emit a beep at a faster speed. Press the mute button to turn on/off the buzzer. Widely Applicable This ac sniffer leak detector can detect a wide range of refrigeration gases in the market, such as CFCs, HCFCs, HFCs, HFOs, HCs, R12, R22, R134a, R1234yf, R1234, R600a, R410a and others mixed refrigerants. Easy to operate and respond quickly, with accurate measurement results. Refrigerant leak detector HVAC certified by EN14624, in compliance with SAE J2791 and SAE J2913 standards. Environmental Protection The refrigerant leak detector is equipped with a large capacity(3000mAh) rechargeable lithium battery, which is more environmentally friendly and convenient to use and longer service life compared to traditional leak detector HVAC. The package comes with a Type-C charger, allowing you to enjoy one-stop shopping.