1.40" x .80" x .875"Detects DCC current being drawn in a block.Connects to AIU01 or most commercial signal systems.
Isolated so that there is no electrical connection to the track
Needs no external power for most operations
Suitable for DCC power up to 20 Amps
Can light up LED or operate relay with external DC power (5-12 Volts)
Colors may vary