Kidde KN-COB-DP2 Plug-In Carbon Monoxide Detector
- Plug-in wall unit with AA battery backup
- Electrochemical sensor
- Audible alarm with a Test-Hush button
- Two AA batteries and user manual included
- 10 year limited warranty
- 1.5 x 2.75 x 4.05 inches, white
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A plug in carbon monoxide detector with battery backup and an audible alarm. The listing gives no smoke detection, so it does not replace a smoke alarm.
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ASIN: B00M48BH30Model: 900-0263Category: Carbon Monoxide Detectors
Overview
Not a hardwired or battery only alarm, this Kidde unit plugs into a wall outlet and carries AA batteries as backup. An electrochemical sensor reads the air, and a loud tone sounds when it triggers.
Plug in power plus battery backup means the alarm can continue through an outage, and the test and hush button handles checks and nuisance alerts. The limitation is a sparse listing: no alarm level, sound volume or sensor life is given.
Who it's for
Bedrooms, hallways and living areas near an open outlet suit a plug in design. Homes that need smoke coverage, or wired interconnected alarms, should look at a different type.
Pros and cons
- Plug in with battery backup
- Long limited warranty
- Occupies a wall outlet
- Sound level not listed
- Carbon monoxide only
Performance notes
An electrochemical sensor reacts to carbon monoxide in the air around it, so placement near living space matters. Plug in power runs the unit normally, while the AA batteries take over if mains power drops. The test and hush button lets you check the alarm and silence nuisance alerts.
Specifications
| Brand | Kidde |
|---|---|
| Model | 900-0263 |
| Dimensions & fit | |
| Item Dimensions D X W X H | 1.5 inches deep x 2.75 inches wide x 4.05 inches high |
| Item Weight | 18 g |
| Capacity & performance | |
| Upper Temperature Rating | 37.8 °C |
| Power & efficiency | |
| Power Source | Plug In |
| Construction & materials | |
| Color | White |
| Included components | |
| Unit Count | 1 Count |
| Warranty & support | |
| Manufacturer Warranty Description | 10-year Limited Warranty |
| Other details | |
| Sensor Type | Electrochemical |
| Alarm | Audible |
| Builtin Media | User manual, two AA batteries |
| Item Type Name | Carbon Monoxide Detector |
| Mfr Part Number | 900-0263 |
| Operating Humidity | 10% to 95% relative humidity, non-condensing |
| Product Style | Clamshell Packaging |
Closest rivals on specs
First Alert CO605 Plug-In Carbon Monoxide Detector- Item Weight 0.04 vs 0.26 pounds (-85%)
First Alert CO710 10-Year Battery Carbon Monoxide Alarm- Item Weight 0.04 vs 0.4 pounds (-90%)
First Alert CO615 Plug-In Carbon Monoxide Alarm with Display- Item Weight 0.04 vs 0.65 pounds (-94%)
Frequently asked questions
What comes with the Kidde 900-0263?
The listing names a user manual and two AA batteries.
Is the Kidde 900-0263 hardwired?
No. The power source is plug in, with AA batteries as backup.
Does the Kidde 900-0263 detect smoke?
The listing describes a carbon monoxide detector and gives no smoke detection.
What sensor does the Kidde 900-0263 use?
The sensor type is listed as electrochemical.