Excellent Repeatability Continuous Detection Reliable Portable Gas Detector: Four-in-One for CH4, O2, Co, H2s

The device supports multi-gas detection and can monitor CH4 (methane), O2 (oxygen), CO (carbon monoxide), and H2S (hydrogen sulfide) at the same time in the composite model. For single-gas versions, you can choose one of these target gases. It is ideal for confined spaces where multiple hazards may be present.

Battery life varies by gas type; up to 20 hours for combustible gases and up to 160 hours for toxic gases. The rechargeable battery requires about 3 to 6 hours for a full charge. This long runtime ensures reliable operation throughout a full work shift without frequent charging.

The GasDetector features three alarm modes: audible (buzzer), visual (flashing lights), and vibrating alerts. All alarms activate simultaneously when gas levels exceed preset thresholds. You can manually mute the audible alarm with a single button press, which is helpful when you need to avoid noise but still stay aware.

The detector works reliably in ambient temperatures from minus 20 C to 50 C, making it suitable for harsh outdoor or industrial environments. Its preheating time is less than 150 seconds (approximately 2.5 minutes) before stable readings are displayed. Always allow full warm up for accurate measurements.

Yes. The standard model uses natural diffusion for gas intake, but it can also be paired with a sampling pump for active air extraction. This pump suction mode allows you to test air in hard to reach areas, such as deep pipes or confined vessel interiors, without inserting the device itself.