Kidde Quick Connect Smoke Detector Adapter Plug,Smoke Alarm Wiring Harness,Compatible with Kidde Hardwired-Smoke,Carbon Monoxide,& Combination-Smoke & Carbon Monoxide Detectors,(Pack of 6)

Price: $48.12 - $35.82
(as of Oct 13, 2026 02:32:45 UTC – Details)


Simplify hardwired alarm replacement with the Kidde 20-9003 Adapter for hardwired smoke and combination detectors. This quick-connect adapter links new Kidde hardwired alarms to existing Kidde wire harnesses for fast, hassle-free replacement and upgrades. Designed for easy installation, the adapter plugs directly into the back of the new detector, while the other end seamlessly connects to the existing wire harness—meaning no rewiring is required. This adapter is intended for use with select compatible Kidde detectors only.* Backed by a 10-year limited warranty from the date of purchase, the adapter is ETL Listed and rigorously tested to meet UL 217 10th Edition and UL 2034 5th Edition standards. Perfect for homeowners seeking a simple, dependable way to update residential smoke detection. *Check the User Guide for compatibility
The information below is per-pack only
Allows installation to an existing Kidde wiring harness
Install hardwired detectors quicker and easier
Allows a new Kidde detector to be interconnected with other Kidde smoke and combination detectors
Designed for use with interconnected hardwired alarms, see User Guide for compatibility
For use only with Kidde branded detectors only
Customers find the adapter works well with hardwired systems and appreciate its ease of use, requiring no rewiring. Moreover, the product saves time and money, with one customer completing 8 detector changes in under an hour. They praise its compatibility, with one noting it works perfectly with the new Kiddie fire/co alarm system, and its perfect fit. Additionally, customers value its convenience, with one mentioning it allows changing detectors without needing an electrician.