Kelunis Multi Gas Detector (4-in-1 Air Quality Monitor)

What gases does this detector monitor and what are the measurement ranges?

The device monitors four critical gases: oxygen (O2) from 0-30% volume, carbon monoxide (CO) from 0-999 parts per million, hydrogen sulfide (H2S) from 0-100 parts per million and combustible gases (LEL) from 0-100% lower explosive limit. These ranges cover the most common hazardous gas concentrations found in industrial and commercial environments.

How accurate are the gas readings and how quickly does it respond?

The electrochemical sensors provide detection accuracy better than 5% full scale across all four gas types. Response time is less than 30 seconds for all sensors, ensuring rapid detection of dangerous gas concentrations. The device comes factory calibrated and includes zero and span calibration functions for field adjustments when needed.

What alarm types are available and can they be customised?

The detector features three alarm types: audio alarms up to 80 decibels, bright LED visual alerts and vibration notifications. All alarm thresholds can be adjusted for each gas type with separate high and low level settings. The device logs alarm events with digital time stamps for safety documentation and compliance records.

How long does the battery last and how is it recharged?

The built-in 3.7V lithium battery provides 6-8 hours of continuous operation on a full charge. A USB charging cable is included for convenient recharging between work shifts. The device displays battery status to prevent unexpected shutdowns during critical monitoring periods.

Is this detector suitable for harsh industrial environments?

Yes, the detector features waterproof, dust-proof and explosion-proof certification for use in demanding industrial conditions. The high-strength ABS construction with anti-slip rubber grip ensures durability and secure handling. Operating temperature range is -20°C to 50°C (combustible sensor 0-40°C) with humidity tolerance up to 95% relative humidity.

Does the device require any setup or calibration before first use?

No setup is required as the device comes factory calibrated and ready for immediate use. Simply turn on the device and begin monitoring. The electrochemical sensors are pre-calibrated to ensure accurate readings from the first use, though zero and span calibration functions are available for field adjustments if needed.

What industries and applications is this detector designed for?

The detector is designed for use in schools, office buildings, factories, hospitals, hotels, greenhouses and any environment requiring air quality monitoring. It's particularly valuable for confined space entry, industrial safety monitoring, HVAC system checks and anywhere potential gas hazards may exist.

What's included in the package and are there any additional accessories needed?

The package includes the 4-in-1 gas monitor, English user manual and USB charging cable. No additional accessories are required for basic operation. The device is ready to use straight from the box with all necessary components included for immediate gas detection monitoring.