1. Material: ABS 2. Detection gas: natural gas (Gas-GH4) liquefied gas (LPG) combustible gas, etc. 3. POST time: within 25 seconds 4. Response time: within 20 seconds 5. Alarm response range: 500ppm (CH4 methane) red light on 6. Power supply: 1.5V 2 AA batteries (not included) 7. Automatic shutdown without alarm after 5 minutes 8. Highly sensitive sensor, which can stably detect the weak signal change of the sensor 9. LED alarm light, the red light is on when gas is detected, the battery needs to be replaced when the green light is on, and the fault is indicated when the yellow light is on 10. Dimensions: 263x36x36mm 11. Weight: 60 grams
