The model BIU-700 Bus Interface Unit (BIU) performs the interface between Port 1 of the Controller Unit and the Loop Detector Racks, Terminals and Facilities, and other devices in a NEMA TS-2 Cabinet Assembly. Its functions include controlling load switch outputs, detector resets, communicating with Inductive Loop Detectors and other devices, and the conditioning and conversion of Terminals and Facilities and Loop Detector call inputs for the Controller Unit.

BIU-700: Standard BIU
BIU-700H: Half Width BIU

The model PS-200 power supply meets or exceeds all requirements for NEMA TS2-2003. It provides +24 VDC at 2 Amps, +12 VDC at 2 Amps, 12 VAC at 0.25 Amps, and a Line Frequency reference output. LED indicators and fuses are provided for all three output voltages.

The model PS-250 power supply meets or exceeds all requirements for NEMA TS2-2003. It provides +24 VDC at 2 Amps, +12 VDC at 5 Amps, 12 VAC at 0.25 Amps, and a Line Frequency reference output. LED indicators and fuses are provided for all three output voltages.

The 5 Amp capability can be used for power hungry video devices.

The model SM662 is a solid-state isolator device used to monitor a mechanical switch or button and report Call status to a Nema TS-2 Controller Unit. It provides the features of a DC Isolator for use in a Nema TS2 Input Assembly, including BIU status. Switch inputs are optically isolated from the cabinet DC Supply and are protected from transient over-voltages.