Specifications:
1) Model no.: SC-2003A-728
2) Power source: 9V battery
3) Operating current: 10uA (normal) and 20 - 50mA (alarm working)
4) Sensitivity to smoke: in comply with UL217 and BS5446: Part 1 2000
5) Kit E mark license no.: KM 53166
6) 0.81 - 1.42%/FT
7) Operating temperature: 40 - 100K (4. 4 - 37.8H)
8) Ambient humidity: 10% - 90%
9) Horn level: 85 decibels at 10 feet
10) Battery life: 1 year min.