Portable Flammable Gas Methane Leak Detector Alarm 1. Display: LCD backlight 2. Sensor: gas-sensitive semiconductor 3. Detection range: 50~1000PPM (methane) 4. Response sensitivity: 50PPM (methane) 5. Response time: less than 500PPM about 5 seconds; greater than 500PPM about 2 seconds 6. Measurable gases: ethanol, propanol, acetylene, ammonia, benzene, methane, ethane, propane, butane, 7. Butylene oxide, gasoline, hydrogen, naphtha natural gas, paint thinner, etc. 8. Alarm mode: analog bar, red backlight and buzzer 9. Power supply: 2x1.5VAAA batteries (not included) 10. 1.1-inch high-definition large screen, the detected gas is clear at a glance 11. Simple three-button, easy to use 12. Anti-lost lanyard fit design, carry with you 13. The back cover can be disassembled and installed on the battery compartment for easy battery replacement 14. The high-definition large screen is equipped with high-precision sensors, analog bar, red backlight and buzzer triple alarm mode, accurate and reliable 15. High-strength ABS material body, tough and wear-resistant, durable 16. High and low sensitivity, accurate detection of pipeline leakage points 17. Suitable for occasions with flammable gas, fog and residue, to detect flammable gas and find the source of leakage 18. Size: 134.5x32.5x16mm