(not for general gas monitoring of workshop/room).

Sound & Light Dual Alarm: when the gas detector senses that combustible gas content exceeds the 500PPM standard, it will beep sounds and red LED lights up to warn, giving visual and audible alarm.
One Button for Use: you just need to power on, wait its self-test/warm up, ready for use, put the gas detector near test position, finally judge gas leakage result with LED indicator and beep sound, very easy.
Light Weight, Portable Size: pen type design gas detector, comfortable to grip, with solid durable plastic shell, not heavy, not big, can be easily stored or conveniently taken to anywhere, used anytime.
Wide Range Of Application: this gas detector, powered by 2 × AA batteries, features precise detection to reduce risk of gas leak, energy-saving auto-off, suitable for gas pipelines' maintenance, household use, etc.

Specifications:
Material: Plastic
Color: Black
Detection Gas: Natural Gas (GAS-CH4), Liquefied Gas (LPG)
Self Detection After Turn On: ＜25s
Response Time: ＜20s
Detection More Than 500PPM (CH4 Methane): Red LED Light
Triggered Indicator: Red LED Light, Beep Sound
Malfunction Indicator: Yellow LED Light
Low Battery Indicator: Flash Green LED Light
Working Temperature: 0℃-40℃
Working Humidity: Relative Humidity 10%~90%RH
Power Supply: 2 * 1.5V AA Battery (NOT Included)
Item Size: 263*36*36mm / 10.35*1.41*1.41in
Item Weight: 60g / 2.11oz
Package Size: 290*82*47mm / 11.41*3.22*1.85in
Package Weight: 145g / 5.11oz

Note:
Gas detector only, others in pictures are not included.
Due to manual measurement, there may be deviation.
Due to lights or others, it may slightly differ from pictures.

Packing List:
1 * Gas Leak Detector
1 * User Manual