Use and Care Manual
Smoke and Smoke + Carbon Monoxide Alarm Adapter
Model 20-9003
Quick Connect wiring adapter for connecting to existing
Kidde/Firex wire harnesses.
• Designed for use with Kidde hardwired alarms.
• Not compatible with other manufacturer’s products.
Description
This adapter can be used to quickly connect Kidde alarms with the existing
wiring harness without having to re-wire or replace the wiring harness:
i12020, i12020A, i12040, i12040A, i12060, i12060A, i12080, i12080A,
i4618A, i4618AC, KN-SMFM-I, RF-SM-ACDC, PE120, P12040, Pi2000, Pi2010,
KN-COSM-I, KN-COSM-IB, KN-COSM-IBA, KN-COPE-I, KN-COB-IC, SL177i,
SLED177i, HD135F, SM120X, CO120X, i12010S, i12010SCO, P4010ACSCO,
P4010ACSCO-W, P4010LACS-W, P4010ACS, P4010ACS-W, P4010ACLEDS,
P4010ACLEDS-2, P4010ACLEDSCO, P4010ACLEDSCO-2, 3050-VAS10-A,
3050-VASC10-A, P4010ACS-WF, P4010ACSAQ-WF, P4010ACSCO-WF,
P4010ACSCOAQ-WF. See Kidde.com for complete list.
10-YEAR LIMITED WARRANTY
Images are representative only.
Actual product may vary slightly.
Ordering Information
Ordering
Number UPC GTIN Pack Config Pack Qty
Case Dimensions
(w x d x h inches) Case Weight (lbs) Cartons/Pallet
21032239 047871322398 10047871322395 Box Tray/Lid (6 Units) 5.14 x 10.81 x 3.09 3.1 2016
1016 Corporate Park Drive, Mebane, NC 27302
1-800-880-6788 www.Kidde.com
A Carrier Company
©2023 Carrier. All Rights Reserved.
All trademarks and service marks referred herein
are property of their respective owners.
FIGURE 1:
Compatible existing
Kidde harnesses
FIGURE 2:
Adapter connecting
to the old harness
WARNING: Turn o 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.
Kidde
Alarm Adapter
Kidde Existing
Wire Harness
New Kidde Alarm

