Compact Size: Portable gases detector, compact ABS body, fallproof and dustproof, quick response, detect leaks quickly, easy to carry and use. High Precise Semiconductor Sensors: Using high-precise semiconductor sensor, with fast response and react very quickly, support more accurate measurement. Easy to Use: Concentration gases tester+thermohygrometer dual-mode switching, convenient for users to safely detect temperature and humidity, and test a of combustible gases types, easy to meet different test needs. Multifunction Design: With automatic calibration, high and low sensitivity adjustment, manual , and ℃/℉ temperature units switching functions. Sound & Light Alarm: Sound and light dual prompts, when detecting combustible gases sink leakage, the meter beeps and the concentration bar will increased. Wide Applications:Suitable for water heating device detection, gases pipeline detection, industrial waste gases detection, gases pipeline detection, oil station operation, gases leak detection, etc. Name:Combustible Gases Detector Display:color LCD disply with backlight Test ranges:50-10,000ppm Sensitivity:Less than 50ppm (methane) Response time:2 Seconds Warm-up time: Alarm mode:Analog Bar, Beep Humidity detection:10-99%RH Temperature detection:-10℃ to 60℃ ℃/°F Switch:YES Manual is possible:YES Sound on and off:YES Cancel automatic shutdown:YES Automatic shutdown:YES Tips:The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance. Power Supply:3 x 1.5V Battery (not included) Type:ZL73A Battery Colour:Black Material:ABS Package Contents: 1 * Gases Leak Detector Only the above package content, other products are not included. Note: Light reflection 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.