This gas leakage detector is used to detect halogen gas with high sensitivity. It can detect leakage in air-conditioning, freezing systems, etc.   Features: Hand-held design for easy operation.  Can detect all kinds of halogen refrigerant gas.  Equipped with long flexible stainless probe for all application.  LED display to show the relative leak size.  With adjustable sensitivity and fast warm-up.  Audio & visible leakage alarm indication and low battery indication.  Compact size and light weight, easy to carry.   Specifications: Color: Black;  Material: ABS;  Detection Gas: All Refrigerant Gas;  Sensitivity: Less than 0.5oz/yr;  Alarm Mode: sound alarm and light alarm;  Response Time: Instantaneous;  Warm-Up Time: less than 20 Seconds;  Continuous Operation Time: 9 hours(slightly vary with working condition);  Power Supply: 3 * 1.5V AA Alkaline Batteries(NOT Included);  Operating Temperature: 0～50℃ / 32～122℉;  Storage Temperature: -10～60℃ / 14～140℉;  Item Size: Approx. 15.8 * 6.3 * 3cm / 6.2 * 2.5 * 1.2in;  Item Weight: Approx. 173g / 6.1oz;  Package Size: Approx. 23.1 * 14 * 3cm / 9.1 * 5.5 * 1.2in;  Package Weight: Approx. 209g / 7.4oz;   Package List: 1 * Halogen Gas Detector;  1 * User ManualManual