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Question About First Alert Smoke Alarm 9120B
I have an 8120BL smoke detector installed when hou...

I have an 8120BL smoke detector installed when house was built in 2004. Just replaced a battery in 1. The green light is on but no flashing red light. The same is true for another on the same side of house. The 2 on the other side of house have the solid green light and the flashing red light. Any problems here you might help me with ?

Asked by Ron on 08/01/2011 1  Answer

ManualsOnline posted an answer 13 years, 2 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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