Features 1、Quick, Precise Detection: high sensitivity gas detector, fast detects natural gas, liquefied gas, coal gas, accurately check whether gas leakage or not, avoiding gas explosion, protecting life and property. 2、Sound /u0026 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. 3、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. 4、Light Weight, Portable Size: pen type design gas detector, comfortable to grip, with solid High quality plastic shell, not heavy, not big, can be easily stored or conveniently taken to anywhere, used anytime. 5、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/u0027 maintenance, household use, etc. Specification The gas detector, made with highly efficient microprocessor, can detect the signal from gas sensor stably efficiently, even when the signal is weak. Sound and LED indicator remind when it is triggered, suitable for detecting special leakage source for particular circumstance, like home, food industry, factory, etc. (not for general gas monitoring of workshop/room). Features: Quick, Precise Detection:high sensitivity gas detector, fast detects natural gas, liquefied gas, coal gas, accurately check whether gas leakage or not, avoiding gas explosion, protecting life and property. 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 High quality 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 Package List 1 * Gas Leak Detector 1 * User Manual