Kidde 21007624 Hardwired Smoke and Carbon Monoxide Detector
- Smoke and CO in one unit, photoelectric smoke sensor
- 120VAC hardwired, 9V backup battery included
- Up to 24 Kidde devices interconnected, 18 initiating
- Voice warnings that name fire or carbon monoxide
- 40 to 100 deg F operating range, 5 to 95% RH
- 1.85 x 5.79 x 5.79 in., 14.72 ounces
- 7 year limited warranty
Updated 15 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A hardwired smoke and carbon monoxide alarm that speaks its warnings and links into a larger Kidde network. It needs an existing AC circuit and electrical box, so battery-only placements are out.
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ASIN: B00ECX0VVYCategory: Combination Smoke & Carbon Monoxide Detectors
Overview
Homeowners and builders replacing a hardwired alarm get smoke and carbon monoxide protection in one Kidde unit that announces which danger it found by voice. A photoelectric sensor watches for smoke, a fuel cell sensor reads CO, and a front-loading backup battery covers short outages.
Voice alerts remove the guesswork of decoding beep patterns, and the photoelectric sensor may catch slow smoldering fires sooner than an ionization sensor. Installation depends on house wiring, so rooms without an electrical box gain little from it.
Who it's for
Houses already wired for interconnected alarms are the target, since the unit plugs into a standard electrical box and links with other Kidde devices. Those without an AC circuit at the wall or ceiling should choose a battery-powered alarm instead.
Pros and cons
- Voice tells fire apart from carbon monoxide
- Photoelectric sensor for smoldering fires
- Front-loading battery door
- Alarm memory flags past events
- Needs an AC circuit and electrical box
- Backup battery covers short outages only
- Operating range excludes unheated cold spaces
- Wireless interconnect not listed
Performance notes
Smoke detection relies on a photoelectric sensor that sees visible fire particles, which favors smoldering fires. Carbon monoxide readings come from a fuel cell sensor built to the UL standard, and the alarm separates the two hazards with distinct beep and voice patterns. Interconnection spreads an alarm to every linked device, so coverage depends on how many units are wired into the chain.
Specifications
| Brand | Kidde |
|---|---|
| Dimensions & fit | |
| Item Weight | 0.92 pounds |
| Item Dimensions D X W X H | 1.9 × 5.8 × 5.8 inches |
| Capacity & performance | |
| Upper Temperature Rating | 100 °F |
| Power & efficiency | |
| Power Source | Battery |
| Construction & materials | |
| Color | White |
| Compatibility & installation | |
| Compatible Devices | Up to 24 Kidde devices (of which 18 can be initiating) |
| Included components | |
| Unit Count | 1 |
| Warranty & support | |
| Manufacturer Warranty Description | 7 year limited |
| Other details | |
| Sensor Type | Electrochemical |
| Alarm | Visual |
| Operating Humidity | 95 percent |
| Number Of Items | 1 |
| Product Style | Hardwired Combination Carbon Monoxide & Smoke Detector |
| Builtin Media | Smoke And Carbon Monoxide Detector |
| Mfr Part Number | 21007624 |
| Item Type Name | Kidde AC Photoelectric Smoke And Carbon Monoxide Detector Alarm / Hardwired With Battery Backup / Model # KN-COPE-IC |
Frequently asked questions
Will the Kidde KN-COPE-IC fit my existing electrical box?
It installs on any standard single gang electrical box, up to a 4 in. octagon junction box, on a wall or ceiling. The electrical connection is made with a plug-in connector, and the unit runs on 120VAC, 60Hz.
How many smoke alarms can share one Kidde interconnect line?
The interconnect must not exceed the NFPA limit of 18 initiating devices, of which 12 can be smoke alarms. With 18 initiating devices connected, 6 strobe lights and or relay modules can still be added.
What does the blinking green light mean on the Kidde 21007624?
A green LED blinking once every 16 seconds means the unit has alarmed for smoke or detected CO. If it saw 100ppm CO or more, pressing test/reset announces CO previously detected. Abnormal smoke since the last test gives three rapid beeps.
How does the low battery warning sound?
One chirp and a spoken low battery warning, with the red LED flashing, every minute for the first hour. After that the red LED flashes with a chirp every minute, and the spoken warning sounds once every fifteen minutes.
Does the Kidde KN-COPE-IC work without house wiring?
No. It is an AC-wired alarm. The included 9V battery is only a backup for short-term power outages.