 It is the latching mini relay featherwing. We have a 24 volt power source that powers a ring light. The power comes from essentially the wall transformer to the featherwing. And then when the featherwing is closed, it will send that power along and over to the device. If I press A, that closes the relay and you can see the big glow on my face. And then I can press a different button here to change that state. And like I said, if we put this into the latched closed position, it is gonna stay there even if I kill power to this whole little setup. So I'm gonna yank the power going to my feather. That means that this is not energized. It's not staying closed by virtue of a magnetic coil. It's staying closed because it has this little internal mechanism, a mechanical switch. It is the latching mini relay featherwing.