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:      Detecting Gas: Natural gas, coal gas and liquefied petroleum gas      Detection Flow: 1L/min      Gas Resolution: 1%LEL/1PPM      Temperature Resolution: 0.1& 8451; / 0.2& 8457;      Gas Measurement Range: 0~100%LEL / 0-50000ppm(automatic)      Temperature Measurement: 0~50& 8451; / 32~122& 8457;±(2& 8451;/4& 8457;)      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& 8451;, 0~70%RH      Storage Environment: -10~50& 8451;, 5~95%RH      Length of Flexible Metal Hose: 270mm / 10.63in      Power Supply: 3 * 1.5V AAA battery (NOT included)      Material: abs      colour: black            Package Contents:      1 x Gas Detector      1 x Storage Pouch      1 x Manual (English)            Only the above package content, other products are not included.      Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.