GAOTek 4 in 1 Multi Gas Detector

GAOTek 4 in 1 multi gas detector adopts imported high performance sensor, is an intelligent high-performance detection alarm that can continuously detect and monitor at most four gases and with function of people falling alarm.




GAOTek 4 in 1 multi gas detector adopts imported high performance sensor, is an intelligent high-performance detection alarm that can continuously detect and monitor at most four gases and with function of people falling alarm. It has built-in temperature and humidity sensors, display temperature and humidity real-time. The wireless function allows the security personnel to get real-time equipment data and alarm status in any place. Visual data displays, a large 2.3 inch full-color screen and quicker response time help improve personnel safety and protection to a whole new level.



  • Imported high-performance sensor with 2 to 3 years’ service life
  • Active pump suction for short response time
  • Embedded 32-bit ultra-low power microprocessor for high resolution and minimal error
  • Built-in temperature and humidity sensors for real-time monitoring
  • Intelligent compensation algorithm for temperature, humidity, and zero-point
  • 3 to 8 levels of target-point automatic calibration
  • Automatic detection of sensor and component status
  • 3-inch full-color screen with clear backlight for visibility in any lighting
  • User-friendly interface with color icon menu and 7-button navigation
  • Switchable between concentration units (PPM, %VOL, mg/m3, mg/L) and languages (Chinese, English)
  • Standard 6000 mAh lithium battery for over 30 hours of continuous operation
  • Supports mobile power supply and charging, compatible with USB port mobile phone charger
  • Equipped with 5V 2.1A USB quick charger with removable plugs (US, Europe, UK/HK, AU standard)
  • Real-time data transmission in 5 different alarm modes, including security personnel falling alarm
  • Rugged mechanical design with high-strength, waterproof, and anti-corrosion enclosure (IP66)
  • Scientific gas chamber design to prevent sensor environment interference
  • Real-time and timing detection modes, various storage options including auto, manual, and single point storage
  • Customizable storage interval for up to 300,000 data groups, expandable with micro-SD card
  • RTU short distance and GPRS unlimited distance wireless transmission modes
  • Sends real-time detection results and alarms to security center
  • Supports USB data download, micro-portable printer, and Bluetooth wireless printing


Technical Specification

Detection gas At most four different gases in air
Working principle TCD thermal conduction (Infrared is optional)
Detection range 0 ppm to 10 ppm, 0 ppm to 50 ppm, 0 ppm to 100 ppm, 0 ppm to 500 ppm, 0 ppm to 1000 ppm, 0 ppm to 2000 ppm, 0 ppm to 10000 ppm
Resolution 0.01 ppm (0 ppm to 100 ppm); 0.1 ppm (0 ppm to 1000 ppm); 1 ppm (>1000 ppm)
Sampling method Active pump suction, built in air pump can open or close independently
Flow speed: 500 mL /min
Accuracy ≤ ±3% F.S.
Repeatability ≤ ±1%
Zero drift ≤ ±1% (F.S./year)
Response time ≤ 20s (T90)
Recovery time ≤ 30s
Shell material High strength abrasion resistant polycarbonate enclosure
Stainless steel
Battery Standard 6000 mAh capacity lithium battery, more than 30 hours continuous working time, charging time less than 7 hours, support
mobile power supply and charging, USB port mobile phone charger compatible.
Charger Standard 5V 2.1A USB quick charger, plug removable, each charger is equipped with four plugs (US, Europe, UK/HK, AU standard).
Alarm method Sound alarm 95 dB@30cm (about 11.81 in), red LED alarm light, personnel falling alarm, short distance wireless and long distance GPRS alarm.
Alarm value setting A1 alarm value, A2 alarm value
TWA, STEL and low concentration alarm value can be set individually.
Screen 2.3-inch TFT
Backlight Manual, automatic when alarming
Button 7 buttons navigation
Direct reading Measured value, data logging status, pump working status, environment temperature and humidity, maximum value, minimum value,
average value
Data storage Auto storage, manual storage, and single point storage. Storage interval can be customized and 300,000 groups data that can be
stored with date/time data, if matching micro-SD memory card, then can store 10 million or more; with data recovery function can
choose part or all of data recovery.
Data download Support USB data download; support GPRS wireless transmission (optional)
Data print Support micro-portable printer, Bluetooth wireless printing.
Calibration 3 to 8 levels of the target-point automatic calibration can set the calibration certified value, zero setting.
Explosion proof ExdⅡCT4 Ga (Intrinsically Safe)
Protection class IP66 (water and dust proof)
Operation mode User mode, administrator mode
Working humidity 0% RH to 95% RH (Non-condensing)
Dimensions 3.14 in × 7.87 in × 2.28 in (80 mm × 200 mm × 58 mm)
Working temperature -40 °F to 158 °F (-40℃ to 70℃)
Weight 1.14 lb. (520 g)


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