Features 1、The high‑definition screen displays the measured value, and the data storage function is convenient for reading. 2、The high‑quality ABS material is waterproof and wear‑resistant, and has long service life. 3、Gas detector with alarm function, buzzer alarm on/off selection, high/low alarm adjustable. 4、It is suitable for detecting natural gas pipelines, exhaust gas and fuel leaks, propane irrigation stations, combustible gas pipelines, etc. 5、The compact combustible gas detector is light and portable, and can be easily carried when going out. Specification Item Type: Combustible Gas Detector Material: ABS Model: WT8823 Purpose: Combustible Gas Detection Alarm Detection Gas: A variety of mixed gases Battery Model: 3 x 1.2V AAA Battery (Battery Not Included) Measuring Range: 0-100% Sensor Type: Contact Combustion Type Response Time: About 10 Seconds Working Voltage: 3.6V Alert: 10% Methane Working Environment Temperature: 0-50℃ Low Battery Indicator: 3.3V How to Use: Open the back cover, put in 3 AAA batteries, press and hold the power button until the screen lights up to use, press the power button again to turn on the screen lights, the HOLD button function is for data storage; MAXIMUM/MINIMUM buttons are the maximum and minimum values; UNIT Key to switch the unit display. Package List 1 x Detector (Battery Not Included) 1 x Tool Box 1 x Instruction 1 x USB Cable