BRK Interconnect Hardwire Smoke Alarm with Battery Backup Size:120 V smooth-spreading Meets or exceeds all

smooth-spreading Meets or exceeds all requirements of ASTM Specification D-4586

for connecting 2 pieces of 1/2" cross link polyethylene pex tubing

and the other a liquid mixed with water

battery self contained

healthier air circulation in the home

BRK Interconnect Hardwire Smoke Alarm with Battery Backup Size:120 V smooth-spreading Meets or exceeds allDirect wire in with 9V battery backup. Hardwired with battery backup for protection during power outages. Perfect mount for easy installation. Mounting bracket keeps the alarm secure over a wide rotation range for ideal alignment. Latching alarm indicator, visually identifies unit that initiated alarm or low battery. Interconnects with most First Alert and BRK hardwired alarms. When one alarm sounds, all compatible alarms sound (up to 12 smoke alarms