Quad Gate to Trigger Converter

This is a Quad Gate-Trigger-Converter that I build.
Inspired by Ken Stone's Gate to Trigger Converter, I modified the wiring for a dot matrix card and added a signal-LED.
The jack-pairs are:
Gate-In
Trigger Out

• ? mA +12V
• ? mA -12V
• ? mA 5V
• 50 mm Depth

No info about availability.