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First Alert SCO501CN
First Alert hardwire combination alarm path — interconnect only with compatible First Alert / BRK wiring guidance.
Fitment facts
| Field | Value |
|---|---|
| Brand | First Alert |
| SKU | SCO501CN |
| Role | Hardwire smoke + CO |
| Often confused with | 1020B, 1024, 4010SCL-W, SCO5CN |
| Hard stop | Do not assume Kidde ↔ First Alert interconnect compatibility |
| Confirm | Existing brand on the circuit and interconnect instructions |
| Interval | Replace by date on the unit (often 7–10 years) — not only low-battery chirps |
| Power | 120V hardwire + battery backup (confirm pack) |
Hard stop
Do not assume Kidde ↔ First Alert interconnect compatibility
Before you buy
- Hard stop: Do not assume Kidde ↔ First Alert interconnect compatibility
- Confirm: Existing brand on the circuit and interconnect instructions
- Often confused with: 1020B, 1024, 4010SCL-W, SCO5CN
- Interval: Replace by date on the unit (often 7–10 years) — not only low-battery chirps
- Match interconnect brand/protocol on the existing circuit.