Combustible Gas Detector Explosion-Proof Natural Gas Gas Methane Gas Alarms 1. Working voltage: 3.7V 2000mAh lithium battery 2. Charging time: about 4-6h 3. Charging specification: Type-C DC 5V 1A 4. Probe light: flashlightalarm light 5. Standby time: more than 10h (when the flashlight is turned off) 6. Direct reading: real-time concentration reading of the sensor, battery concentration unit, temperature, time 7. Alarm: voice prompt and siren, alarm light (sensor location part), vibration indication alarm, working voltage undervoltage indication 8. Applicable temperature and humidity range: -10 - 40 degrees Celsius, 20% - 95%RH 9. Storage temperature and humidity range: -10 - 50 degrees Celsius, 10%-70%RH 10. Basic error: @5000-9000PPM relative error +-5% 11. Detection gas: natural gas, liquefied petroleum gas; suitable for artificial and coal gas (main components methane, isobutane, etc.) 12. Range: 0-9999PPM 13. Resolution: 3PM 14. Warm-up time: 30s 15. Response time (T90): instant response 16. Sampling method: diffusion 17. Alarm value, correction method: two-point on-site correction 18. Display: LCD liquid crystal display with automatic backlighting 19. Alarm setting: low limit alarm 1000PPM, high limit alarm 4000PPM, users can also set it by themselves 20. Explosion-proof mark: Ex ib IB T3 Gb 21. Size: about 17 x 6.6 x 2.85cm, universal fixed tube length about 26cm 22. Weight: about 255g Features: 1. Can detect a variety of gases: methane, natural gas, hydrogen, coal gas, ethanol can all be detected 2. The sensor has good stability and reproducibility, high output sensitivity for city gas, and fast response speed 3. Type-C charging interface, built-in large-capacity lithium battery provides long-term endurance for long-term detection 4. Rich alarm methods: buzzer, light, vibration, voice, real-time feedback of gas leak detection 5. Probe flashlight lighting, no fear of dark environment 6. High-strength ABS engineering plastic