Kidde 20SA10 Hardwired Smoke Alarm with 10-Year Backup vs Kidde 30CUDR Combo

Side-by-side specs from each maker.

Only the differences are shown.

Kidde 20SA10 Hardwired Smoke Alarm with 10-Year BackupKidde 30CUDR Combo
TypeSmoke or CO alarmSmoke or CO alarm
Alarmsmokecombo
PowerHardwired with 10-year backup batteryAA (2 replaceable batteries)
InterconnectwiredNot listed
Standards (maker)Kidde DETECT alarms are designed to the latest UL standardDesigned to the latest UL standard for safety and reliability
Replace after10 yearsNot listed
Maker's warningsAlarm beeps to replace it 10 years after it is poweredNot listed

Kidde 20SA10 Hardwired Smoke Alarm with 10-Year Backup

A hardwired smoke alarm with a 10-year backup battery that interconnects with other Kidde alarms by wire.

  • 10-year backup battery
  • Hardwire interconnect
  • Reminder beep at 10 years
  • Needs household wiring

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