First Alert BRK 7010B Hardwired Smoke Detector with Photoelectric Sensor and Battery Backup , White

Brand: FIRST ALERTColor: WhiteFeatures: 120 volt hardwire smoke alarm with photoelectric sensor and battery backup Features convenient 9 volt battery backup, silence/test button, dust cover, 85 decibel alarm Inter connectable with BRK and first alert hardwired smoke and carbon monoxide alarms Intuitive latching alarm indicator identifies which unit triggered alarm. Backed by 10 year limited warranty and tested to meet UL 217 standards 85 decibel alarm Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety. Smoke particles of varying number and size are produced in all fires. For maximum protection, use both ionization and photoelectric sensing technologies. Ionization alarms are generally more sensitive to fast flaming fires and photoelectric alarms are generally more sensitive to smoldering fires. Details: Amazon.com The BRK hardwire smoke alarm with photoelectric sensor is designed to reduce common "nuisance" alarms. It's an excellent choice fo