Kidde KN-COSM-IBA Hardwired Smoke and CO Detector 2 Pack
- 2-pack of combination smoke and carbon monoxide alarms
- Photoelectric smoke sensor
- Hardwired with battery backup, per the listing description
- Voice warning announces the hazard type detected
- Interconnectable with other units, per the listing description
- 5.6 x 5.6 x 1.8 in., 1.3 pounds listed weight
Updated 15 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A sensible two-pack for replacing hardwired combination alarms where a spoken warning helps tell smoke from carbon monoxide. The listing is thin, so confirm wiring and battery details before buying.
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ASIN: B08LJGV4PXCategory: Combination Smoke & Carbon Monoxide Detectors
Overview
Homeowners replacing ceiling alarms get two combination units that watch for smoke and carbon monoxide and speak the hazard out loud. The listing describes them as hardwired with a battery backup and able to interconnect with other alarms.
Voice alerts help at night, when a beep pattern is hard to decode, and one housing for both hazards cuts the number of ceiling fixtures. Detail is thin, though: the spec sheet calls the power source battery powered while the description says hardwired, and no battery type or sensor life is given.
Who it's for
Homes already wired for linked alarms can swap these in and add carbon monoxide coverage with a spoken warning. Renters or owners without ceiling wiring should look at a plug-in or standalone battery model.
Pros and cons
- Smoke and carbon monoxide in one unit
- Voice names the hazard type
- Photoelectric smoke sensing
- Two alarms in the pack
- Battery type and sensor life not listed
- Power source conflicts between listing sections
- Needs existing alarm wiring for hardwire use
- Very little technical detail provided
Performance notes
A photoelectric chamber senses smoke when particles scatter light inside the sensor, and the carbon monoxide sensing runs alongside it in the same housing. The voice module states which hazard tripped the alarm, which speeds up the decision to leave or ventilate. With interconnection, a warning reaches the whole house only when every linked unit is wired correctly.
Specifications
| Brand | Kidde |
|---|---|
| Dimensions & fit | |
| Item Weight | 1.3 pounds |
| Item Dimensions D X W X H | 1.8 × 5.6 × 5.6 inches |
| Power & efficiency | |
| Power Source | Battery |
| Construction & materials | |
| Enclosure Material | Other |
| Included components | |
| Unit Count | 2 |
| Other details | |
| Sensor Type | Photoelectric |
| Alarm | Audible |
| Product Style | Classic |
Frequently asked questions
Does the Kidde KN-COSM-IBA need to be hardwired?
The listing describes it as a hardwire alarm with battery backup, while the spec sheet lists the power source as battery powered. Check the unit's wiring requirements against your ceiling box before planning the install.
What does the voice warning on the Kidde KN-COSM-IBA do?
The talking alarm announces the type of hazard detected, which is meant to speed up reaction time compared with a tone alone.
Is the Kidde KN-COSM-IBA only a smoke alarm?
No. It is a combination unit that detects smoke and also detects carbon monoxide.