B501 bases are four-inch flangeless mounting bases designed for use with System Sensor® 200 Series detectors. They are intended for use with intelligent systems that have screw terminals for power (+ and -) and remote annunciator connections.

B200S Intelligent Sounder Bases set a new standard for performance, installation, and aesthetics. They are addressable sounder bases that require a unique, separate sounder base address.

F210 flanged rings are designed for use with B210LP detector bases.

B224BI Plug-in Isolator Detector Bases prevent an entire communications loop from being disabled when a short circuit occurs.

B224RB Detector Relay Bases are designed for use with 200 Series detectors, and provide a single Form C contact relay for the control of auxiliary functions, such as door closures and elevator recall.

F110 flanges are replacements for the flanges on B400 Series detectors.

The B200SR sounder and LF sounder bases are fully compatible with existing B501BH Series sounder base installations. The device enables users to select one of two B501-supported tones (ANSI Temporal 3 or Continuous) through a jumper.