1. Compact and convenient, can work at any time
2. Can detect multiple combustible gases to eliminate potential safety hazards
3. 3-color indicator design. Simple and easy to understand
4. Can carry out air wet temperature test, high precision sensing
5. Digital display design, replaceable battery, longer service life

Parameters:
1. Detecting gas: hydrogen, carbon monoxide, methane, ethane, propane, butane, ethylene, propylene, butylene, acetylene, propyne, butyne, hydrogen sulfide, phosphine
2. Detection range: 300-10000ppm (reference medium for methane)
3. Sensitivity: 50ppm
4. Response time: 2 seconds
5. Warm-up time: 30 seconds
6. Alarm mode: analog strip, LED lights, beeps
7. Range: humidity measurement: 0-100% RH; temperature measurement: -10-60 degrees celsius / 14-140 degrees fahrenheit
8. Resolution: humidity measurement: 1 percent RH; temperature measurement: 0.1 degrees celsius / 0.2 degrees fahrenheit
9. Accuracy: humidity measurement: about 5 percent RH; temperature measurement: about 0.1 degrees celsius / 0.2 degrees fahrenheit
10. Automatic shutdown: about 5 minutes
11. Power supply: 2 x 1.5V AAA batteries (not included in shipment)
12. Size: 170 x 28 x 31mm
13. Weight: 67g

Packing list:
- Main unit x 1
- Storage bag x 1
- Instruction manual x 1