DPDT Remote Relay Board w/Y cord, 5 Volt 2 Amp
Attaches to the Controller input of the OctoIII to add a DPDT relay to control accesories and frog power.  Usually used with a fascia controller and the included Y cable.  Can also be used with the DCC Octocoder.  Contacts are rated for 2 Amps absolute maximum and have resettable fuses.
 
S - control line.  Connect to white wire of extension cable. TTL logic levels. When the S line is low (0) the coil is off and draws no power. The white lines show the connections when the coil is not energized. When the S line is high (above 1.4 volts) the coil is energized and the center wiper moves to the other side.
R - 5 volt power supply.  Connect to red wire. Relay will draw 0.1 Amps on the power line when energized. Relay is non-latching so will draw continuously when energized and will turn off if there is no 5V power.
B - Ground - connects to the black wire of the cable.
It is possible to parallel the contacts using three jumpers between the holes on the edge of the board to change the relay to a 4A SPDT.  The white lines show how the jumpers should be connected.
 
5VRD01  MSRP $17.95 USD