FIRST ALERT SCO403 SMOKE ALARM & CARBON MONOXIDE DETECTOR COMBO PACK

FIRST ALERT SCO403 SMOKE ALARM & CARBON MONOXIDE DETECTOR COMBO PACK
CARBON MONOXIDE DETECTOR WITH ELECTROCHEMICAL SENSOR; SMOKE ALARM WITH IONIZATION SMOKE SENSOR; SIMPLE TO USE SILENCE/TEST BUTTON; LOW BATTERY WARNING; END-OF-LIFE TIMER; LOUD 85 DECIBEL ALARM; CONVENIENT FRONT BATTERY ACCESS; INCLUDES 2 AA BATTERIES FOR CARBON MONOXIDE DETECTOR & 9V FOR SMOKE ALARM; 5-YEAR LIMITED WARRANTY