Kidde 30CUA10 10-Year Hardwired Combination Smoke and Carbon Monoxide Detector with Interconnected Alarm LED Lights (Upgraded to CUAC10YFEX)

Alarm Warnings — featuring multi-color LEDs
Fire: The red LED will flash in sync with the alarm pattern (3 long beeps).The alarm will repeat this pattern until the unit is reset or smoke is eliminated.
Carbon Monoxide: The red LED will flash in sync with the alarm pattern(4 quick beeps). This continues until the unit is reset or the CO is eliminated.
End of Unit Life: Two chirps and amber LED flashes per minute.
Alarm Memory: Alerts a user if smoke or CO has been detected in the last24 hours. If smoke has been detected, the red LED blinks every 15 sec. If COhas been detected, the red LED blinks twice every 15 sec.

Features & Benefits
Double the Detection — Alerts you to both smoke & carbon monoxide(CO) using a single, cost-effective device.
Worry-Free 10-Year Backup Battery — No battery changes for 10 years.Avoids inconvenient battery replacements and saves up to $40 overthe life of