System Sensor B401 Plug-In Detector Base
$ 28.95
System Sensor B401 Plug-In Detector Base is used with System Sensor smoke and heat detector heads. The capability of plugging these detectors into a variety of special bases makes them more versatile than equivalent direct-wired models. The B401 base is intended for use in 2-wire systems, with screw terminals provided for power and remote annunciator connections.
Tyco 517.050-017 5B Universal Detector Base