BRK Interconnect Hardwire Smoke Alarm with Battery Backup Size:120 V 6 prong spears

6 prong spears

there are mounting holes at the edges of the unit

perfect for filling equipment with fuel tanks from 15-60 gallons

Comfort Glow's 5 plaque Natural Gas(NG)

BRK Interconnect Hardwire Smoke Alarm with Battery Backup Size:120 V 6 prong spearsDirect 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