Kidde 20SAR Hardwired Smoke Alarm with AA Backup vs Kidde 30CUDR Combo
Side-by-side specs from each maker.
Only the differences are shown.
| Kidde 20SAR Hardwired Smoke Alarm with AA Backup | Kidde 30CUDR Combo | |
|---|---|---|
| Type | Smoke or CO alarm | Smoke or CO alarm |
| Alarm | smoke | combo |
| Power | Hardwired with 2 AA backup batteries | AA (2 replaceable batteries) |
| Interconnect | wired | Not listed |
| Standards (maker) | Kidde DETECT alarms are designed to the latest UL standard | Designed to the latest UL standard for safety and reliability |
| Maker's warnings | Change replaceable batteries every 6 months or when the low battery chirp sounds | Not listed |
Kidde 20SAR Hardwired Smoke Alarm with AA Backup
A hardwired smoke alarm with two replaceable AA backup batteries that connects to other Kidde alarms by wire.
- AA backup batteries
- Hardwire interconnect
- Twist-and-click mount
- Needs household wiring
- Batteries need changing
Kidde 30CUDR Combo
A battery-powered smoke and carbon monoxide combo alarm that runs on two replaceable AA batteries. A voice-alert version is listed separately.
- Replaceable AA batteries
- Not listed by the maker: price