Features 【Rechargeable Battery】: The first rechargeable gas detector, can output more current, which makes the sensor more sensitive and effectively solves the problem of high power consumption of ordinary battery powered gas detector. 【Quadruple Alarm】: This gas leak detector pen detects the presence of gas leakage with 4 mode alarm: analogue bar, buzzer, red light flashing and vibration. The audible alarm can be switched off at any time, suitable for different scenarios of detection. 【Multi Gas Detector】: Gas tester can locate various of flammable gas leak sources like natural gas, methane, propane, formaldehyde, LPG, ethane, butane, coal gas, gas fuel, even perfume (with alcohol) etc. 【Handheld Gas Detector with Cover】: Mini size and compact design, easy to carry for detecting dangerous areas that are hard to reach. This portable gas leak locator also comes with a removable silicone holster, protecting against shock, friction and impact. 【Super Large LCD Display】: Despite being a gas detection pen, it has a very large screen for more intuitive readings and better hazard assessment. Backlight can be switched on and off. Ambient temperature display with adjustable Celsius/Fahrenheit unit. Specification: Item Type: Combustible Gas Detector Material: ABS Display: LCD display Sensor: NTC sensor, gas sensor Sampling Rate: 1 Second Alarm Mode: Analog bar, backlight, motor vibration and buzzer Automatic Shutdown Time: About 5 minutes Working Temperature Humidity: 0-40℃, 0-90%RH Power Supply: 3.7V 400mA lithium battery Package List:1 x Combustible Gas Detector1 x User Manual1 x USB Cable Package List 1 x Combustible Gas Detector 1 x User Manual 1 x USB Cable