Trigger and gate + SH

It produces trigger and gate signals whenever a "timing" signal input crosses a user-defined threshold. At the same time, the trigger pulse fires a high-performance sample-and-hold circuit that samples a second "main" signal input.

http://elby-designs.com/contents/en-us/p392.html

• 10 mA +12V
• 5 mA -12V
• ? mA 5V
• 75 mm Depth

No info about availability.