NCE 5240205 (BD-20) Block Detector for DCC, .01 to 20 Amps BD20

Detects DCC current being drawn in a block. Connects to AIU01 or most commercial signal systems. No electrical connection prevents "sneak path" short circuits. Detects presence of train in block by the current it draws. Usable to 20 Amps of track current with no heating. Adjustable sensativity. Can be used to drive external relays or lamps. Block detector for DCC - .01 to 20 Amps