System Sensor SPCWK Speaker Only, Outdoor Ceiling Mount White D4120W with Gasket and SB-I/O Outdoor

with Gasket and SB-I/O Outdoor Backbox

This device is perfectly suited for applications where local contacts are required for system status

Model OP921 is UL 268 7th edition listed incorporating advanced built-in ISOtechnologyTM - True Class-X SLC operation (use is optional)

The MRP-2002E offers the same features as the MRP-2002 but allows connection to 220/240 VAC

The compact design allows for quick installation and simple replacement with an easy four step process

System Sensor SPCWK Speaker Only, Outdoor Ceiling Mount White D4120W with Gasket and SB-I/O OutdoorSystem Sensor SPCWK Speaker Only, Outdoor Ceiling Mount White with Backbox