Features: Compact size and light weight, the combustible gas detector adopts double body protection, safer for operation and portable to carry with you. Flexible metal hose and metal induction shield can reduce interference, which is suitable for all kinds of scene detection. Use high performance sensor, it has high sensitivity, quick response, good reliability, and accurate leakage detection. HD VA reverse color screen, digital and analog dual display, easy to read. %LEL and PPM measurement units switch. APO button for one key turn off and turn on the Auto Power Off Function. Sound alarm and LCD display visible leakage alarm. The detector is suitable for gas pipeline leakage detection, domestic gas prevention, oil and gas exploitation, tunnel and mine operation, chemical industry, metallurgy, refining and chemical industry, biochemical medicine and other industries. Specifications: Material: ABS Detecting Gas: Natural gas, coal gas and liquefied petroleum gas Detection Flow: 1L/min Gas Resolution: 1%LEL/1PPM Temperature Resolution: 0.1 / 0.2 Gas Measurement Range: 0~100%LEL / 0-50000ppm(automatic) Temperature Measurement: 0~50 / 32~122(2/4) Measurement Accuracy: 5%FS Sampling Mode: Diffusion type Response Speed: 2 seconds Calibration Mode: Automatic calibration after starting up for 30 seconds Automatic Shut-down: About 10 minutes Color VA Reverse Display Screen: Yes Type of Alarm: Sound, screen display Preheating Time: 30 seconds Working Current: 190mA Working Environment: 0~50, 0~70%RH Storage Environment: -10~50, 5~95%RH Length of Flexible Metal Hose: 270mm / 10.63in Power Supply: 3 * 1.5V AAA battery (NOT included) Item Size: 130 * 73 * 33mm / 5.12 * 2.87 * 1.30in Item Weight: 230g / 8.11oz Package Weight: 400g / 14.11oz Package Size: 21.5 * 11 * 4.5cm / 2.87 * 4.33 * 1.77in Packing List: 1 * Gas Detector 1 * Storage Pouch 1 * Manual (English)