HABOTEST HT66 Mini Gas Detector Household Handheld Combustible Gas Detecting Gauge with Long Probe Gas Leak Monitor Tester PPM Meter Methane Concentration Alarm Instrument

Features:
Compact Structure Super Light Weight: portable to use and store, providing you a better using experience.
High Precision Fast Response: adopts gas-sensitive semi-conductor sensor for fast detecting and has wide reaction range(50~1000ppm).
6.6-inch Long Probe: the long probe allows you to freely detecting in a narrow place.
Visible Audible Dual-way Alarm: when combustible gas leakage is detected, the buzzer will sound and the concentration indicator will be on.
Low Power Consumption: powered by 2pcs AAA batteries (NOT included), with low battery indication, long standby and easy for replacement.
Auto Power Off: when no concentration is measured within 5 minutes, the meter will automatic shutdown. One button to power on-off manually.