---
product_id: 644361107
title: "Kidde Quick Connect Smoke Detector Adapter Plug, Smoke Alarm Wiring Harness, Compatible with Kidde Hardwired Smoke, Carbon Monoxide, & Combination Smoke & Carbon Monoxide Detectors"
brand: "kidde"
price: "HK$272"
currency: HKD
in_stock: false
reviews_count: 10
url: https://www.desertcart.hk/products/644361107-kidde-quick-connect-smoke-detector-adapter-plug-smoke-alarm-wiring
store_origin: HK
region: Hong Kong
---

# 120V AC hardwired power Interconnect up to 24 alarms Install in under 1 minute Kidde Quick Connect Smoke Detector Adapter Plug, Smoke Alarm Wiring Harness, Compatible with Kidde Hardwired Smoke, Carbon Monoxide, & Combination Smoke & Carbon Monoxide Detectors

**Brand:** kidde
**Price:** HK$272
**Availability:** ❌ Out of Stock

## Summary

> 🔌 Connect Fast, Stay Safe Longer — The Smart Upgrade Your Home Deserves!

## Quick Answers

- **What is this?** Kidde Quick Connect Smoke Detector Adapter Plug, Smoke Alarm Wiring Harness, Compatible with Kidde Hardwired Smoke, Carbon Monoxide, & Combination Smoke & Carbon Monoxide Detectors by kidde
- **How much does it cost?** HK$272 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/644361107-kidde-quick-connect-smoke-detector-adapter-plug-smoke-alarm-wiring)

## Best For

- kidde enthusiasts

## Why This Product

- Trusted kidde brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Power:** Skip rewiring—connect your Kidde alarms in 4 simple steps for a hassle-free upgrade.
- • **Durable & Reliable:** Built to last with a 10-year limited warranty—peace of mind that keeps your home protected.
- • **Time-Saving Installation:** Cut installation time from 10 minutes to under 1 minute per detector—weekend project, done.
- • **Seamless Interconnectivity:** Link up to 24 smoke, heat, or CO alarms plus 6 strobe lights for whole-home safety sync.
- • **Exclusive Kidde Compatibility:** Designed specifically for Kidde hardwired detectors to guarantee perfect fit and performance.

## Overview

The Kidde Quick Connect Smoke Detector Adapter Plug revolutionizes hardwired alarm installation by eliminating rewiring and wire stripping. Compatible exclusively with Kidde smoke, carbon monoxide, and combination detectors, it enables quick, secure connections to existing 120V AC wiring. Supporting interconnection of up to 24 alarms and multiple strobe lights, this adapter streamlines retrofits and replacements, saving valuable time and reducing installation errors. Backed by a 10-year limited warranty, it’s the essential tool for modernizing home fire and CO safety with professional ease.

## Description

Kidde Quick Connect Smoke Detector Adapter Plug, Smoke Alarm Wiring Harness, Compatible with FireX Hardwired Smoke, Carbon Monoxide, & Combination Smoke & Carbon Monoxide Detectors, model 20-9003, are adapters that quickly connect Kidde & FireX hardwired smoke, carbon monoxide, or combination smoke & carbon monoxide alarms - eliminating the need for rewiring, and wire stripping. The adapter plug works with your 120V AC power outlet installed in your ceiling for smoke detectors. The Quick Connect installation can be completed in four steps: simply insert the 2-pin male connector from the adapter into the hardwire from your ceiling, use the female side of adapter to plug into the back of your smoke, carbon monoxide, or combination smoke & carbon monoxide alarm, test your alarm to ensure connection, and connect the alarm to the bracket on your ceiling. Ideal for retrofitting new smoke, carbon monoxide, or combination smoke & carbon monoxide alarms in older homes or connecting alarms with interconnect capabilities (alarms must have hardwired AC interconnect capability). Interconnection capability: allows you to connect up to 24 Kidde smoke, heat, or CO alarms, with the possibly it interconnect 6 strobe lights or relay modules. Compatible with most Kidde models: i12020, i12020A, i12040, i12040A, i12060, i12060A, i12080, i12080A, i4618, 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-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, and 900-CUAR. Kidde Quick Connect Adapter Plug comes with a 10-year limited manufacturer's warranty. Install smoke detectors & carbon monoxide detectors on every level of your home and near bedrooms to help keep your family safe.

Review: Convenient and Easy Smoke Detector Installation - The Kidde Quick Connect Smoke Detector Adapter Plug is a must-have for anyone upgrading or replacing their smoke detectors. It makes the installation process incredibly easy by allowing you to quickly connect your hardwired smoke or carbon monoxide detector without the hassle of complicated wiring. The adapter plug is compatible with Kidde smoke alarms, carbon monoxide detectors, and combination units, providing versatility for different safety needs. The design is simple yet effective, and it ensures a secure connection for reliable performance. I love how much time and effort it saves during installation, especially when compared to traditional wiring methods. It’s durable and well-made, so I feel confident in its long-lasting use. Overall, this adapter plug is a game changer for quick and safe smoke detector installations.
Review: Great product...too expensive but well worth it, and good luck finding them elsewhere. - For whatever reason$, Kidde changed up the wiring harnesses and connectors on their newer hardwired detectors so if you are replacing existing hardwire Kidde detectors that have reached end of life, you either need to re-wire them with the new stuff (provided with the detectors) or make it super-easy on yourself by buying one of these adapters for each detector you are replacing. These cost less than $5 bucks at h*me d*pot but good luck finding them in stock. for a ~55% premium (I paid $7.77 per) I had them from desertcart in less than 2 days. Unless you have absolutely no idea what you're doing (no judgment here!), changing out the wiring harness DIY is a very doable job, but unless you're extremely quick the time savings these provided were well worth $7.77 a pop. And if you don't know what you're doing with electricity (again, no judgement here) you'll essentially eliminate any risk of shock/electrocution using these in lieu of rewiring, again well worth it at under $8 per detector. It took me about a minute to swap out each detector using these adaptors and I didn't have to worry about screwing up...to remove the old harness and rewire the new probably would have taken me about 10 minutes per detector conservatively, not counting cussing at dropped tools and wiring nuts, the annoyance of having to cut power for a while, etc. If you can afford it and/or value your time at more than 50 cents per minute or so, save yourself the headache and buy these. And if you are considering hiring an electrician to wire some new Kidde detectors for you to replace your old ones, this will save you a ton of money and I promise it's easy enough to do yourself. Tested all 7 smoke detectors in my home after installing with these adapters and they worked as expected including interconnection of alarms. Knocked out a job I had been putting off for 2 weeks in less than 20 minutes and enjoyed the rest of the weekend with no chirping (both from the old alarms or from other members of my household annoyed I hadn't replaced them yet).

## Features

- 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D5TD3GJF |
| Alarm | Smoke and Combination Alarm Adapter |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #12,024 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #160 in Fire Safety |
| Brand | Kidde |
| Color | White |
| Customer Reviews | 4.7 4.7 out of 5 stars (987) |
| Date First Available | July 22, 2024 |
| Included Components | Adapter |
| Item Package Quantity | 1 |
| Item Weight | 1.12 ounces |
| Item model number | 20-9003 |
| Manufacturer | Kidde |
| Material | Plastic |
| Number of Items | 1 |
| Part Number | 21032239 |
| Power Source | Hardwired |
| Product Dimensions | 2.76"D x 1.66"W x 4.49"H |
| Sensor Type | Photoelectric |
| Shape | Rectangular |
| Size | (Pack of 1) |
| Style | Alarm |
| UPC | 047871322398 |
| Upper Temperature Rating | 100 Degrees Fahrenheit |

## Product Details

- **Alarm:** Smoke and Combination Alarm Adapter
- **Brand:** Kidde
- **Color:** White
- **Item Weight:** 1.12 ounces
- **Material:** Plastic
- **Power Source:** Hardwired
- **Product Dimensions:** 2.76"D x 1.66"W x 4.49"H
- **Sensor Type:** Photoelectric
- **Style:** Alarm
- **Upper Temperature Rating:** 100 Degrees Fahrenheit

## Images

![Kidde Quick Connect Smoke Detector Adapter Plug, Smoke Alarm Wiring Harness, Compatible with Kidde Hardwired Smoke, Carbon Monoxide, & Combination Smoke & Carbon Monoxide Detectors - Image 1](https://m.media-amazon.com/images/I/31imV4Ppg1L.jpg)
![Kidde Quick Connect Smoke Detector Adapter Plug, Smoke Alarm Wiring Harness, Compatible with Kidde Hardwired Smoke, Carbon Monoxide, & Combination Smoke & Carbon Monoxide Detectors - Image 2](https://m.media-amazon.com/images/I/413suPvvwwL.jpg)
![Kidde Quick Connect Smoke Detector Adapter Plug, Smoke Alarm Wiring Harness, Compatible with Kidde Hardwired Smoke, Carbon Monoxide, & Combination Smoke & Carbon Monoxide Detectors - Image 3](https://m.media-amazon.com/images/I/41LSceyqEPL.jpg)
![Kidde Quick Connect Smoke Detector Adapter Plug, Smoke Alarm Wiring Harness, Compatible with Kidde Hardwired Smoke, Carbon Monoxide, & Combination Smoke & Carbon Monoxide Detectors - Image 4](https://m.media-amazon.com/images/I/41Yfm1ul70L.jpg)
![Kidde Quick Connect Smoke Detector Adapter Plug, Smoke Alarm Wiring Harness, Compatible with Kidde Hardwired Smoke, Carbon Monoxide, & Combination Smoke & Carbon Monoxide Detectors - Image 5](https://m.media-amazon.com/images/I/41Zm+4f1AoL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Convenient and Easy Smoke Detector Installation
*by J***N on April 23, 2025*

The Kidde Quick Connect Smoke Detector Adapter Plug is a must-have for anyone upgrading or replacing their smoke detectors. It makes the installation process incredibly easy by allowing you to quickly connect your hardwired smoke or carbon monoxide detector without the hassle of complicated wiring. The adapter plug is compatible with Kidde smoke alarms, carbon monoxide detectors, and combination units, providing versatility for different safety needs. The design is simple yet effective, and it ensures a secure connection for reliable performance. I love how much time and effort it saves during installation, especially when compared to traditional wiring methods. It’s durable and well-made, so I feel confident in its long-lasting use. Overall, this adapter plug is a game changer for quick and safe smoke detector installations.

### ⭐⭐⭐⭐⭐ Great product...too expensive but well worth it, and good luck finding them elsewhere.
*by L***R on October 16, 2024*

For whatever reason$, Kidde changed up the wiring harnesses and connectors on their newer hardwired detectors so if you are replacing existing hardwire Kidde detectors that have reached end of life, you either need to re-wire them with the new stuff (provided with the detectors) or make it super-easy on yourself by buying one of these adapters for each detector you are replacing. These cost less than $5 bucks at h*me d*pot but good luck finding them in stock. for a ~55% premium (I paid $7.77 per) I had them from Amazon in less than 2 days. Unless you have absolutely no idea what you're doing (no judgment here!), changing out the wiring harness DIY is a very doable job, but unless you're extremely quick the time savings these provided were well worth $7.77 a pop. And if you don't know what you're doing with electricity (again, no judgement here) you'll essentially eliminate any risk of shock/electrocution using these in lieu of rewiring, again well worth it at under $8 per detector. It took me about a minute to swap out each detector using these adaptors and I didn't have to worry about screwing up...to remove the old harness and rewire the new probably would have taken me about 10 minutes per detector conservatively, not counting cussing at dropped tools and wiring nuts, the annoyance of having to cut power for a while, etc. If you can afford it and/or value your time at more than 50 cents per minute or so, save yourself the headache and buy these. And if you are considering hiring an electrician to wire some new Kidde detectors for you to replace your old ones, this will save you a ton of money and I promise it's easy enough to do yourself. Tested all 7 smoke detectors in my home after installing with these adapters and they worked as expected including interconnection of alarms. Knocked out a job I had been putting off for 2 weeks in less than 20 minutes and enjoyed the rest of the weekend with no chirping (both from the old alarms or from other members of my household annoyed I hadn't replaced them yet).

### ⭐⭐⭐⭐⭐ Quality, easy to use and works great
*by R***. on December 28, 2025*

Works great!! A+*

## Frequently Bought Together

- Kidde Quick Connect Smoke Detector Adapter Plug, Smoke Alarm Wiring Harness, Compatible with Kidde Hardwired Smoke, Carbon Monoxide, & Combination Smoke & Carbon Monoxide Detectors
- Kidde Hardwired Smoke & Carbon Monoxide Detector, 10-Year Battery Backup, Voice Alerts, Interconnectable LED Warning Light Indicators
- Kidde Hardwired Smoke Detector, 10-Year Battery Backup, Interconnectable, LED Warning Light Indicators

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.hk/products/644361107-kidde-quick-connect-smoke-detector-adapter-plug-smoke-alarm-wiring](https://www.desertcart.hk/products/644361107-kidde-quick-connect-smoke-detector-adapter-plug-smoke-alarm-wiring)

---

*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-03*