Features
1. High sensitivity and high accuracy
2. Continuously gas concentration and composition LCD real-time display
3. audible visual vibration alarms
4. Two-stage(Low/High) alarm threshold can be changed based on customer's request
5. Simple calibration
6. Fully functional self-testing
7. Password protection capability: only the authorized user can modify the preset parameter

Technical Specifications of Portable Multi Gas Detector

Operating & Storage Environment:
Temperature: -20°C~55°C (-4F~122F); Humidity: 5%-95% (Relative humidity non-condensing); Pressure: 95-110kPa

Alarm Threshold    There may be regional variations, users can set up the value based on practical situation.

Detecting Range:
O2: 0~30.0% VOL    Low/High Alarm Point: 18.5% vol/ 23.5%vol
CH4: 0~100% LEL    Low/High Alarm Point: 25% LEL/ 50%LEL
CO: 0~500 PPM       Low/High Alarm Point: 35 PPM / 70 PPM
H2S:0~100 PPM       Low/High Alarm Point: 10 PPM / 20 PPM

Transducers:    CH4: Catalytic Combustion sensor
                   O2/H2S/CO: Electrochemical sensors
Alarm Type low & high alarm, multiple gas alarm, sensor alarm, battery low alarm, prompt tone, automatic shutdown alarm
Audible Alarm Variable-frequency pulse alarm which can reach volume of 95dB in a distance of 1 foot (0.3 meter)
Visual Alarm Two red LED omnibearing visible glitter alarm
Vibrating Alarm Pulsant signals alert the gas alarm or any other alarm status
Display Alphanumeric large LCD screen displays the real time gas concentration and alarm stage
Backlight Automatically activated when working in poor lighting environment or alarm alerts or button pressed.
Self-checking Function Self-checking after start up.
Calibration Function Automatic zero point calibration;Automatic measurement range calibration.
Power Supply Rechargeable lithium battery
Weight 211g
Size 126mmx66mmx33mm
Remarks: The detected gas types and detecting range can be changed based on customer's request.