• Your BD8 Block Occupancy Detector is the latest in train detection systems.
• It works with layouts using either Command Control or DC Control systems for operating trains.
• In addition, for DC Control systems, the BD8 can report block status in either “OCCUPIED-VACANT” form, or it can report in “VACANT-STANDING-EAST-WEST” form.
• With the OCCUPIED-VACANT form of output, your BD8 is all you need for two color signaling.
• The VACANT-STANDING-EAST-WEST form of output is particularly helpful with hidden
• By having two LED’s on your control panel, both will be on if the block is occupied and no cab is selected; when you select a cab, only one will turn on to indicate the direction the train will move.
• Built in self-test functions to assist in installation and trouble shooting
• The BD8 user's manual is now available for free download on our website

Block Detector 16 (BD16)

The BD16 Block Occupancy Detector is a state of the art train detection system which has the following features:

• Detects trains in up to 16 separate blocks, up to 3 amps/block
• Provides OCCUPIED and VACANT outputs for each block
• Works with DC or Command Control
• Detects by monitoring current to each block
• Directly operates LED's using the power supply included
• Can also operate bulbs, relays to output logic signals to other circuitry
• Outputs can switch 200 milliamps at up to 16 volts DC
• Furnished completely assembled, with power supply and mounting hardware
• Built in self-test functions to assist in installation and trouble shooting
• The BD16 User's Manual is now available for free download on our website