Features: Excellent sensor with high sensitivity, 0.1oz/yr (3g/yr) Detects All KINDS OF halogenated refrigerants Flexible stainless steel probe reach to almost any tight space Single color LED display with 7-level leak alarm RESET time sensitivity adjustment 12 inches (30cm) flexible probe Tactile keypads make the operation more convenient. One extra spare sensing tip included as a FREE GIFT Applications: Detect leaks in air-conditionings, freezing systems and so on. This unit responds to ALL haloge-nated (including Chlorine and Fluorine) refrigerants. This includes, but is not limited to: CFCs : R12, R11, R500, R503etc. HCFCs : R22, R123, R124, R502etc. HFCs : R134a, R404a, R125 etc. Detect Ethylene Oxide gas leaks in hospital sterilizing equipment(it will detect the halogenated carrier gas). Detect SF-6 in high voltage circuit breakers. Detect most gases that contain Chlorine, Fluorine, and Bromine (halogen gases). Detect cleaning agents used in dry cleaning applications such as perchloroethylene. Detects halogen gases in fire-extinguishing system. Specification: Maximum sensitivity: 0.1 oz/yr ( 3g/yr ) for all halogen refrigerants Working temperature: 0?~50? Reaction time: Instantaneous Resetting time: Instantaneous Warm-up time: < 2 sec. Sensor tip life under continuous operation: approx. 30 hours Power Supply: 3V DC, 2 x 1.5V 'AA' Alkaline batteries (Not include) Probe length: 12" Overall Dimension: 6 1/2" x 2 1/2" x 1 1/2" Package Included: 1 x Portable leak detector 1 x Extra spare sensing tip 1 x Plastic durable carrying case 1 x Full English manual Notice: 1. To ensure the high sensitivity, make sure the the tip and protector is clean before using everytime. 2. Switch off the machine after use. Remove batteries when unused for a long time, so that it could prolong life time. 3. Operate the leak detector according to the instruction manual.