1. leak detector +temperature and humidity meter. In addition to measuring gases, you can also measure humidity and temperature.2.Accurate numerical, High and low sensitivity, quick response3.Test a of combustible gases to meet different needs.It is convenient for users to safely detect all kinds of combustible gases.4.Auto power off After about 10 minutes, the instrument will automatically shut down.5.Fall proof, dust proof and water proof ABS material, comfortable to hold.Combustible detection:50~1000PPM Temperature detection:-20~60C(-4F~140F)Humidity detection:0.0% ~99.9% RHDisplay:LCD Auto Power Off:YesLow battery indication:YesTrichromatic backlight:YesBuzzer alert:YesPower: 3pcs, 1.5V, AAA battery (Batteries Not Included)Colour:black+redMaterial:ABSPackage Contents:1 x Combustible Detector1 x English manualOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.