Miniature voltage regulator can power any CIRCUITRON LED- type Strobe Flasher or EOT flasher from track power. Can be used as a constant lighting unit in unpowered rolling stock. 35 mA output will power 2-3 Strobes or EOT Flashers, LEDs with a 47 ohm resistor, one #7418 ot two #7414 Mitey Lites wired in series. Bi-Directional, output will be present be present whether train is moving forward or backward. Can be used with DC, AC or Carrier Control systems. .3x .3x .8"