This board provides four relays to allow switching of high-current loads. Great for spindle control, coolant pump control, etc. This board includes relay drivers and clamp diodes on-board, so all you need to provide is 12VDC power (5V version coming soon as well) for the relay coils and TTL logic level outputs to control the relays.
The control signals can be wired directly to any parallel port output pin or any other TTL output you wish to use.
The price is $55 per board or $58 for a version that mounts on DIN rail.
For more information and specifications, please view the product page on our web site.
Please feel free to contact me with any questions, comments, or suggestions.
4169 Four Mile Road
Bay City, MI 48706