BRK Hardwired Photoelectric Smoke & Carbon Monoxide Alarm

BRK 6-Pack Hardwired Talking Photoelectric Smoke & Carbon Monoxide Alarms. Features Photoelectric Smoke Sensors & Electrochemical Carbon Monoxide Sensors. Voice Alarm Not Only Alerts You Whether The Threat Is Smoke Or Carbon Monoxide, But Also Tells You The Location Of The Danger. Pre-Program Up To 11 Locations In Your Home. Inter-Connectable & Can Be Installed & Linked With Up To 18 Compatible Devices, So When One Triggers, All Alarms Sound. 85DD Audible Alarm, Photoelectric Smoke Sensor. Effective At Detecting Slow Smoldering Fires, Battery Backup, Single Test/Silence Button Silences A Non-Threatening Alarm Or Low Battery Warning.