FIRST ALERT SC7016BTCA 120VAC/DC Photoelectric Smoke & Carbon Monoxide Combination Alarm with Battery Backup

PRODUCT FEATURES:- Photoelectric Smoke Sensing Technology - Electrochemical Carbon Monoxide Sensor - Two AA Battery Backup - Single Test/Silence Button - Two Silence Features – Silences low battery chirps for up to eight hours or temporarily silences nuisance alarms - Two Latching features – Alarm Latch and Low Battery latch - Perfect Mount - allows for easy alignment of alarm - Spread Spectrum Horn Tone - Lower and varying frequency makes it easier for the elderly with normal aged related hearing loss to hear the horn. - Optipath 360 Technology™- patented technology provides 360 degrees of direct access to the smoke sensor - 10-Year CO Sensor/10-Year End-of-Life - 7-Year Limited Warranty