Home / Smoke & CO / 21010072
Kidde 21010072
Retail/listing SKU often mapped to Kidde hardwire smoke/CO paths — confirm the model label on the alarm body, not only the Amazon title.
Fitment facts
| Field | Value |
|---|---|
| Brand | Kidde |
| SKU | 21010072 |
| Role | Hardwire smoke / CO listing path |
| Often confused with | KN-COSM-IBA and other hardwire combo SKUs |
| Hard stop | Interconnect protocols differ — match brand/protocol labels on the existing circuit |
| Confirm | Model string on the alarm backplate vs carton UPC/SKU |
| Interval | Replace by date on the unit (often 7–10 years) — not only low-battery chirps |
Hard stop
Interconnect protocols differ — match brand/protocol labels on the existing circuit
Before you buy
- Hard stop: Interconnect protocols differ — match brand/protocol labels on the existing circuit
- Confirm: Model string on the alarm backplate vs carton UPC/SKU
- Often confused with: KN-COSM-IBA and other hardwire combo SKUs
- Interval: Replace by date on the unit (often 7–10 years) — not only low-battery chirps
- Match interconnect brand/protocol on the existing circuit.