1. Gas type: natural gas, liquefied gas, odorated flammable gases, etc. 2. Sensor type: planar semiconductor 3. Warm-up time: less than 25s 4. Alarm frequency: 2.713KHz/100ms 5. Alarm way: sound and light alert 6. Ambient temperature: 0-50 Celsius degree 7. Environment humidity: less than 90%RH 8. Power by 2 x AA battery(not included) 9. Size: 230 x 30 x 30mm
