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    Detectable Gas
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| Sampling Mode | Diffusion sampling (Available for connection with external pump) | 
| Sensor Type | Electrochemical sensor | 
| Operating Humidity | 0-95%RH (non-condensing) | 
| Detectable Gas | Combustable | 
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      | Sampling Mode | Diffusion sampling (Available for connection with external pump) | 
| Sensor Type | Electrochemical sensor | 
| Operating Humidity | 0-95%RH (non-condensing) | 
| Detectable Gas | Combustable | 
| Display Information | Gas types, Concentration value, Concentration unit, Time, Battery status, Alarm status, etc. | 
| Gas Sensor Life | 2 - 3 years (Under normal environment conditions). | 
| Power Supply | 3.7V, 1800mAh rechargeable lithium battery | 
| Package Type | Aluminium Alloy Box | 
| Measurable Range | 0-100 PPM | 
| IP Rating | IP65 | 
| Alarm Mode | Audible-visual-vibration alarm, sound ≥ 75dB | 
| Display | Large Screen LCD | 
| Operating Temperature | -20°C~50°C | 
| Type of Product | Portable Gas Detector | 
| Weight | 300 g | 
| Body Material | ABS and PC | 
| Dimension | 140*73*32mm | 
| Model No | KM 840-LEL |