Details
The Kidde smoke and combination detector wiring adapter is used to easily connect a new Kidde smoke or combination detector with other Kidde hardwired alarms without having to strip wires or use wiring nuts. The Kidde wiring adapter creates a quick and easy installation experience for hardwired detectors.
Compatibility
This adapter can be used to quickly connect Kidde alarms with the existing wiring harness without having to rewire or replace the wiring harness:
- i12020
- i12020A
- 12040
- i12040A
- i12060
- i12060A
- i12080
- i12080A
- i4618
- i4618A
- i4618AC
- RF-SM-ACDC
- PE120
- P12040
- Pi2000
- Pi2010
- KN-COSM-I
- KNCOSM-IB
- KN-COSM-IBA
- KN-COPE-I
- KN-COPE-IC
- KN-COB-IC
- KN-COP-IC
- SL177i
- SLED177i
- HD135F
- SM120X
- CO120X
- i12010S
- i12010SCO
- P4010ACSCO
- P4010ACSCO-W
- P4010LACS-W
- P4010ACS
- P4010ACS-W
- P4010ACLEDS-2
- P4010ACLEDSCO-2
- 3050-VAS10-A
- 3050-VASC10-A
- P4010ACSCO-WF
- P4010ACSCOAQ-WF
Key Features
- Connects select Kidde & FireX wire harnesses to new compatible Kidde alarms*
- Fast installation with no rewiring
- Quickly connect the adapter without stripping wires or using wire nuts
- Easily plugs into back of your new Kidde alarm
Specifications
| Data point | Value |
|---|
| Accessory sub category | Adapter |
| Interconnects | Up to 12 Kidde smoke alarms (limited by NFPA 72). See user guide for complete instructions. |
| Model | 20-9003 |
| Size | 2.66" |
| Warranty | 10-year limited |
Helpful Resources
Learn more about this adapter.
Frequently Asked Questions
Which adapter do I need?
Find the model number on your existing alarm and identify the Kidde model you plan to install. Then use the Compatibility Guide to confirm if one of our adapters supports that specific replacement combination.
Is this adapter universal
No. The adapter works only with specific existing and replacement alarm model combinations listed in the User Guide or Compatibility Guide.
What alarm models does it work with?
Compatibility varies by adapter model. Review the User Guide and Compatibility Guide and verify both your existing alarm model and intended Kidde replacement model before purchase or installation.
Can I use it with alarms from another brand?
The KA-B3 is designed for select BRK or First Alert to Kidde replacement situations. The 20-9003 is designed for select Kidde or FireX to Kidde replacement situations. Compatibility must be confirmed by exact model number.
Will my alarms remain interconnected?
The adapter can support hardwired interconnection when used with compatible alarms and properly completed AC wiring. Different alarm models may provide different interconnection capabilities, including whether they communicate smoke, carbon monoxide or both signals. Refer to the applicable User Guides for complete information.
What should I do if my model is not listed?
Don’t assume the adapter will work based on the connector shape, alarm image or brand alone. Contact Kidde Customer Support for help identifying an appropriate replacement path.
Does the adapter replace the wiring harness>
No. It connects a compatible new Kidde alarm to the supported existing wiring harness. Follow the alarm User Guide and adapter instructions for installation requirements.
Why Kidde
As North America's #1 home fire safety brand,* Kidde has been working to help make your home the safest it can be for more than 100 years. Now, our latest smoke alarms and combination smoke + carbon monoxide (CO) alarms are bringing you the next level of fire and CO safety. Help protect what matters most in your life with features like cutting edge technology that send fast alerts to give your family more time to get out safely. And enhanced sensing technology that reduces false alarms often caused by cooking.
*Based on total household installations as of December 2023.
WARNING:
Turn off AC power before attempting to connect wire harnesses or adapters. This smoke alarm adapter allows the installation of new Kidde alarms to existing “legacy” Kidde wiring harnesses. When using this adapter, the power harness supplied with your new Kidde alarm is not used. Connect the 20-9003 adapter to the legacy (existing) Kidde wiring harness. To install the adapter, push the large end of the adapter into the existing wired Kidde harness and confirm it snaps into position. Give a small tug to make sure the adapter is snapped into place. Then insert the opposite end of the adapter into the back of the new unit. After installation, turn on AC power and be sure that the AC power indicator is operating and test all your alarms following the instructions supplied by the alarm manufacturer for your specific alarm model. If the alarms are interconnected, push the test button on each alarm and verify that all the interconnected alarms sound when any alarm is activated. The interconnect system should not exceed the NFPA interconnect limit of 12 smoke alarms. SEE USER GUIDE FOR COMPLETE INSTRUCTIONS.
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