I had first alert alarms already, they were ten years old, so I wanted to replace. these plugged right in, no wiring or anything, and batteries too. great price too
Verified purchase: Yes | Condition: New
The unit is easy to install. It comes with 3 preconfigured wire harnesses, and even if those do not work for your situation the unit can be stripped and hard-wired to accommodate any in-ceiling configuration. Make sure you buy all the same model numbers for your inventory as they may not be compatible with other model numbers or other brand types, Which may cause false alarms or alarm failures.
Verified purchase: Yes | Condition: New
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