Features:Detects SF-6 in high voltage circuit breakers.Detects cleaning agents used in dry cleaning applications.Detects leaks in other systems and storage/recovery containers.Detects Ethylene Oxide gas leaks in hospital sterilizing equipment.Detects halogen gas and most gases which contain chlorine, fluorine and bromine.Detects all kinds of halogenated refrigerants including but not limited to CFCs, HCFCs, and HFCs.With precise ultra-low power consumption IC design, can be automatically adjusted to the best optimum detecting state.Simple Operation InstructionInstall 4 x AAA battery(not included)Turn the knob clockwise to turn on the leak detector, after 6 seconds, it turns into stand-by mode and begins to beep regularly. Then you can start detecting the leak.The detector will beep regularly at a slow frequency when turn it on. If leak detected, it will beep in a higher frequency. (2 beeps per second when the detector is open, 10 beeps per second when detect the leakThe sensitivity increases from 1 to 7 in sequenceThis Freon leak detector is designed with corona sensor so the probe should be very close to the gas leak area.Widely applied on pipe leakage, automobile air conditioner, cold storage, refrigerator repair and so on.Specifications:Reset the time: 2-10 secondsWorking temperature: 0 C ~ 52 C.Maximum sensitivity: 6gr/yr(halogen refrigerants).Battery life: about 50 hours under normal use.Response time: instantaneousPreheating time: about 6 seconds.Operating mode: continuous, unlimitedFixed probe length: 20cm (7.87 inches)Dimension: 22.9 cm x 6.5 cm x 6.5 cm (9.01 x 2.56 x 2.56 inches).Electricity source: DC6V , 4 x AAA batteries(not included)Battery Voltage Instructions:Green - battery voltage is normal, suitable for work;Orange - battery voltage is close to the limitation, need to replace as soon as possible;Red - battery voltage is below the acceptable operating level.LotFancy refrigerant freon leak detector features an automatic circuit and a reset function that set itself to ignore the ambient level of Halogen gas.Reset : The leakage detector, upon initial switch-on, can automatically adjust itself to ignore the present level of Halogen gas in 6s and enter into the best state of detection.Place the sensing tip near a known leakage area and switch on, it's easy to find higher concentration of leakage.Or move to the fresh air and turn on, adjust to the maximum sensitivity, any concentration above zero will be detected.Automatic Circuit : when the detector is in measuring state, automatic circuit will follow the changing level of halogen gas to avoid false alarm.Leakage Warning:When the gas leakage are discovered, "di di" sound will become more hurried. More refrigerant freon leak, more rapid. Meanwhile the indicator light flash quickly.Package includes:1 x Instruction manual1 x Carrying pouch1 x Halogen leak detector with probeNotes:1. Manual measuring, please allow 1 ~ 3mm error, thank you.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture.