Kidde 30CUDR Combo vs Kidde 50CUA10-S Smoke + CO Alarm with Strobe

Side-by-side specs from each maker.

Only the differences are shown.

Kidde 30CUDR ComboKidde 50CUA10-S Smoke + CO Alarm with Strobe
TypeSmoke or CO alarmSmoke or CO alarm
Alarmcombocombo
PowerAA (2 replaceable batteries)Hardwired with sealed 10-year backup battery
Standards (maker)Designed to the latest UL standard for safety and reliabilityNot listed
Maker's warningsNot listed177 candela strobe flashes with the horn; interconnected alarms sound and flash together

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

Kidde 50CUA10-S Smoke + CO Alarm with Strobe

A hardwired smoke and carbon monoxide alarm with a 177 candela strobe, a sealed 10-year backup battery and interconnect capability.

  • Strobe for visual alerts
  • 10-year backup battery
  • Smoke and CO in one unit
  • Needs household wiring