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The B404BT detector base is designed for use with System Sensor model 2451 and 2451TH photoelectronic and 1451 ionization detector heads. The capability of plugging these detectors into a variety of special bases makes them more versatile than equivalent direct-wired models. Refer to the System Sensor catalog for other available plug-in bases. The B404BT base is intended for use in 4-wire systems with terminals provided for remote annunciator and relay connections.
System Sensor Detector Heads: