1. Product size: 37x107mm
2. Working power: DC 4.5V 3 AA batteries
3. Applicable gas: smoke, carbon monoxide
4. Sampling method: natural diffusion
5. Sensors: semiconductor sensors, electrochemical sensors
6. Alarm set value: smoke 0.3db/M
7. Indoor temperature: -10 - 55 degrees Celsius
8. Response time: less than 30 seconds
9. Recovery time: less than 30 seconds
10. Alarm mode: sound and light alarm
11. Service life: about 3 years
12. Standby current: less than 105uA
Note: This product is shipped without battery
