Features: This instrument is a halogen gas detector with charging function, which is suitable for detecting all halogen gases, including chlorine and fluorine, but it is not limited to these: detecting ethylene oxide and ethanol gas on medical equipment. Detecting halon gas in the fire extinguishing system; detecting air conditioning, refrigeration system and refrigerant recovery device. The imported sensor has good sensitivity and excellent repeatability, sensitive sensing, and quick response and timely alarm. Sound/Light/Double Alarm: Place the instrument in the space to be tested. If the detected gas is higher than the specified concentration value, there will be sound, flashing rice, vibration alarm prompts, prompt reminder, and avoid unnecessary losses. Quickly detect the leakage point of gas: It can detect the position of micro-leakage combustible gas, quickly preheat, and respond quickly. Two-level alarm shows that the more leakage rate indicator, the larger the leakage rate and the higher the concentration of combustibles. The instrument supports USB charging function, with plug-in support plug charging, mobile power, computer charging, etc., convenient and fast, full of sustainable work for more than 9 hours. Specifications: Condition:100% Brand New Color: As shown in the picture Probe Length: Approx. 363mm/14.3in Detect item All refrigerant gas Sensitivity Less than 0.5oz/yr. for all halogen based refrigerants Response time Instantaneous Warm up time