Interconnect up to 18 units, 12 smoke alarms maximum; when one alarm goes off all units sound their alarm
The pack includes a separate large size 5-5/8-Inch mounting plate, which attaches to any standard rectangular or octagon junction box and covers drywall cutouts
The alarm sounds with its loud 85 decibel horn and the red LED indicator flashes. A green LED light indicates AC power
The chamber and cover design protect the alarm from bugs ...
Digital LCD Display on main unit with min/max temperature settings
Audible and Visual Alarm when temps exceed min/max set -22° to 104°F
Easy to set Main unit includes a magnet to secure to the outside of the fridge and a stand Sensors clip into place inside the fridge and freezer Suction cups included
Main unit powered by 2 AAA batteries (not included) Each sensor powered by 2 AAA batteries (not included)