Trigger, as in camera not horse

So this tiny wireless radio frequency trigger and receiver from eBay arrived today. Amazingly not only does it work with my equally tiny Coolpix A but by placing it in the adapter on the right it also works with my large pro-level Nikon D850 (and all the other recent and current pro and semi pro Nikon bodies)

Considering the Coolpix A was made in 2013 and the Nikon D850 in 2018 onwards it’s nice to see this discontinued accessory still working with both models.

I want it for remote starting video recording when my Coolpix A monochrome (being converted as we speak in New Jersey, USA) is mounted on a gimbal. This is part of my fantasy that me and my two girls will one day make some quirky little movies. Although my iPhone is also becoming a rather good tool for making movies.