The DBD22 is a dual block occupancy detector. It provides complete isolation from the track by using small transformer type sensors. This also means there is no drop in track voltage as there is with sensing diodes. The DBD22 is designed to work well with the SIC24 signal and indicator controller.
Operating voltage: 5 to 15 volts DC
Typical operating current (unoccupied): 3 mA @ 5 volts, 8 mA @ 12 volts
Typical operating current (occupied): 8 mA @ 5 volts, 20 mA @ 12 volts
Maximum load per output: 150 mA
Typical trigger current: 3 mA @ 5 volts, 6 mA @ 12 volts
Maximum sensor current: 5 A with one pass of feeder wire