1.Gas leak detector +temperature and humidity meter. In addition to measuring gases, you can also measure humidity and temperature. 2. numerical, High and low sensitivity, quick response 3.Test a of combustible gases to 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. proof, dust proof and water proof ABS material, comfortable to hold. Combustible gas detection:50~1000PPM Temperature detection:-20~60C(-4F~140F) Humidity detection:0.0% ~99.9% RH Display:LCD Auto Power Off:Yes Low battery indication:Yes Trichromatic backlight:Yes Buzzer alert:Yes Power: 3pcs, 1.5V, AAA battery (Batteries Not Included) Colour:black+red Material:ABS Package Contents: 1 x Combustible Gas Detector 1 x English manual Only the above package content, other 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.