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: Name: SMART SENSOR 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 Manual(English) Shipping: 1.We guarantee to ship goods out within 24-72 hour after payment confirmation except holiday. 2.We ship by China post,HKpost EMS,DHL,Fedex,according to your choice when placing orders . 3.If you didn't receive the item after 45 days,please feel free to contact us.We will make all our effort to resolve the problem. Warranty: 1.All items have 1 year guarantee.IF your purchase do not meet merchantable quality, fitness for purpose or match the description, We can make sure your issues are resolved . 2.For wrongly-shipped items, Please contact us in 48 hours after delivery.We will arrange to deliver the correct items or return all your payment. 3.For defective or faulty products,please take photos or videos,we would resend or refund after confirmation.