Holiday Shipping Details & Extended Holiday Returns 
The size of the combustible gas detector is 5*2.8*1.3 in and the weight is 0.9 lb, it is small and light, easy to carry to different work sites
Click the ZERO button, the combustible gas detector will clear the previous data after entering a 5-second countdown
When the combustible gas is detected to be higher than a certain concentration, the sewer gas detector will sound an alarm and the screen will display HIGH
Click the power button, the combustible gas detector will have 30 seconds of automatic calibration time, no need to manually calibrate
Using a flexible probe, the probe of gas sniffer can be twisted at will according to needs, the longest stretch is 270mm, which is convenient to deal with various scenarios
Power on for about 10 minutes, if there is no operation, natural gas detector will automatically power off, press APO button in power on state to cancel automatic power off
