GX-3R (Multi Gas Detector)

Gas Detected: Combustibles, Oxygen, Carbon Monoxide, and Hydrogen Sulfide
Detection Principle: Combustible (Catalytic combustion),O2 (Galvanic cell), H2S and CO (Electro-chemical cell) 

Measuring Range: 0-100%LEL, 0-40.0%Vol, 0-100 ppm, 
0 – 500 ppm (1 ppm) 
Alarm Set Points: 1st, 2nd and over range           
Gas Sampling: Diffusion
Continuous Operation: Up to 20 hours after full charge
 (Up to 14 hours after 90 min charge)
Accuracy: based on the gases