Kidde 20SA10 Hardwired Smoke Alarm with 10-Year Backup vs Kidde 30CUAR-W Smart Smoke + CO Alarm

Side-by-side specs from each maker.

Only the differences are shown.

Kidde 20SA10 Hardwired Smoke Alarm with 10-Year BackupKidde 30CUAR-W Smart Smoke + CO Alarm
TypeSmoke or CO alarmSmoke or CO alarm
Alarmsmokecombo
PowerHardwired with 10-year backup batteryHardwired (120V AC) with 2 AA backup batteries
Interconnectwiredwired
Standards (maker)Kidde DETECT alarms are designed to the latest UL standardETL certification
Replace after10 yearsNot listed
Maker's warningsAlarm beeps to replace it 10 years after it is poweredAC power is required for full operation and Wi-Fi; batteries are backup only

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 30CUAR-W Smart Smoke + CO Alarm

A hardwired smart smoke and carbon monoxide alarm that sends alerts to the Kidde app over 2.4 GHz Wi-Fi and has two AA backup batteries.

  • Smoke and CO in one unit
  • Mobile alerts
  • Interconnects with hardwired alarms
  • Needs household wiring
  • Needs 2.4 GHz Wi-Fi