Features:
1. Ceiling or wall mounting
2. Easy to install with mounting hardware included
3. 9 Volt battery operated (included)
4. Suitable for any room
5. Flash alarm indicator (red)
6. Test button for easy recommended monthly testing
7.Low battery signal
8. Safety clip feature, not allow mounting of smoke alarm Without battery installed
9. photoelectric chamber for early detection from all directions
10. Loud 85dB alarm signal

SPECIFICATIONS:
Power Source: 9V-1X6F22 battery 9V
Battery life time: About 1year
Operating Current: 10 uA (normal) and 20-50 mA (alarm working)
Sensitivity to smoke: In comply with UL217and5446: Part 1 2000
Operating Temperature: 40°F -100°F (4.4- 37.8 degree)
Ambient Humidity:10- 90 %
Horn Level:85 Decibels at 10 feet
Alarm Mode:Flash & sound alarm
Battery life:1 year min
Size: 105mm*25mm
Box size: 34cm*57cm*42cm
Qty/box: 115pcs
Weight: 17.3kg/box