Features： 1、High Accuracy Digital Display: Real time display of combustible gas concentration, accuracy higher than the industry standard, to ensure your safety. 2、Portable Design: Small and lightweight, can be carried around, easy to use in the home, construction site and outdoor activities. 3、Natural Gas and Gas Detection: Can be used to detect natural gas and gas leaks to prevent accidents. 4、Buzzer Audible and Visual Alarm: When combustible gas is detected, a buzzer and flashing alarm will be issued to remind you to take measures in time. 5、Long Service Life: The use of ABS material, long service life, durable, you can use for a long time to avoid frequent replacement. Specification： Item Type: Gas Leak Detector Weight: 95g/3.35oz Material: ABS Sensor: gas sensitive semiconductor Detection Range: 300-10000PPM Preheating Time: about 30 seconds Reaction Time: ≤500PPM: about 5 seconds, > 500PPM: about 2 seconds Alarm Mode: analog bar display, buzzer, vibration (vibration function can be selected according to the model) Operating Conditions: 0-50℃ 20-80%RH Storage Conditions: -10-60℃ 20-80%RH Battery: 2x1.5V AAA alkaline battery (shipped without battery) Package List： 1 x Gas Leak Detector 1 x Screwdriver 1 x Instructions