Schindler HT
Schindler HT buttons are obvious to spot as they have a distinct style. HT has a regular version and a VR version. I've always enjoyed this style of button because it's not like any others. So many modern buttons are all similar with no character to them.
How to Wire Schindler HT Call Buttons
This video shows in detail how a Schindler HT call button works and shows a method of wiring one up. I currently do not know how to use the original circuit boards to operate in the way which I want it to, so I designed my own way to get the buttons to light up. This video shows you a fairly simple way to get your button lighting up using very minimal materials.