cigarette smoke detector

Photoelectric type smoke detector
9V battery-operated
Low battery alert
With LED indicator

1. Smoke Sensitivity: 0.086 dB/m to 0.14 dB/m   
2. Power Supply: 9V Carbon Zinc/Alkaline/Lithium Batttery
3. Battery Life: >12months   
4. Low battery life: >30days   
5. Alarm indicator: continuously emitting red light and shounder         
6. Alarm sound level: >85dB at 10 feet (3m)   
7. Temperature: 0°C - 50°C   
8. Humidity: 10%-90%RH, no condensation or icing
9. Dimensions (L x W x H):  Ø125x35 mm