Where Can I Find Serial Number?

Smoke Alarm

Serial number of smoke alarm can be found on the underside of the device itself.

SK-20 Serial Number Location
OSD-01 Serial Number Location
BG-964 Interconnect Serial Number Location

Fire Extinguisher

Serial number of fire extinguisher can be found near the base of the fire extinguisher itself. It may be a bit hard to read, so you may have to put it up against the light to see the number.