BRK SC9120B Hard-Wired Dual Smoke & Carbon Monoxide Alarm

Combined protection in one product. Electrochemical sensor for CO, ionization sensor for fire, and more. Be safe and ready for night time emergencies. BRK smoke and carbon monoxide detectors with remote strobe lights provide a sense of security for restful sleep while hearing aids are removed for the day. A combination of up to 18 alarms can be interconnected. Place detectors where they will most likely pick-up danger, and strobes where they will most likely alert residents. Features Combination alarm detects smoke and carbon monoxide dangers and eliminates the need for two electrical boxes Ionization technology best for flaming fires Latching alarm indicator remembers which unit initiated an alarm T3 smoke alarm sound pattern T4 carbon monoxide alarm sound pattern Intelligent Sensing Technology reduces nuisance alarms 9V battery back-up Two locking features to prevent unauthorized removal of battery or alarm Available with or without a strobe light Specs Hard-wired installation Meets UL Standard 217 Designed for single-family homes Side-load battery drawer allows easy replacement Battery back up for sound alarm only Seven-year manufacturer's warranty Documentation BRK SC9120B Hard-Wired Dual Smoke & Carbon Monoxide Alarm User Manual