The SD-85A2 is a high quality device indicated for monitoring of visible smoke presence in accommodations and early detection of fire.
The smoke detector is designed for most buildings, however, is not suitable for the exterior of the building or very high premises because of the possibility of not taking the detection the existing risk of fire.
The SD-85A2 is an autonomous device.
Mounting side view:
Place for 9V battery:
In the kit:
Declaration of Performance