Siterlink Smoke Fire Alarm 120V/AC Powered Smoke Alarm 10 Years Life Hardwired Interconnected Smoke Detector Photoelectric Sensor Smoke and Fire Alarm with DC 9V Battery Backup(GS517)

DescriptionThe unit is a photoelectric AC120V with 9V DC battery backup smoke alarm. The smoke alarm should be installed in every room (except the bathroom), and every other area of the home, making sure the people in the home will be able to hear and respond to the alarm sound. For minimum protection you should fit an alarm in the hallway between the living areas and sleeping areas. Place the unit near to the living areas as possible and ensure the alarm is audible when the bedrooms are occupied. Package included: 2*Hardwired Smoke Alarm, 1*9V Battery Backup, 1* User Manual, 2*Screws