The Detector Expansion Module Slave (DEM114) is used with the Detector Expansion Module Master (DEM144) for a Traffic Detection System, provides a simple solution to wiring detector outputs to a NEMA TS1, TS2, Type 170, or 2070 cabinet where access to the detector input termination points is limited or when the controller software cannot reassign detector inputs.
Each DEM114 distributes up to four additional outputs from a TAP or RackVision Terra units. The DEM114 connects to the DEM144 with a simple RJ-11 jumper. Placing DEM114 modules in the appropriate detector rack slots provides desired controller inputs. One DEM144 supports up to four DEM114 modules that can distribute up to four groups of four outputs in the cabinet. The jumper matrix on the DEM144 module is easy to customize for detector outputs to match the current detector rack or Input File configuration.
Output LEDs provide an additional visual indicator of the demand for service to the controller from the TAP or RackVision Terra unit. Three-position switches: “Auto” for normal operation, “Off” to disable output and “Test” verifies proper output configuration.