I hated the old membrane switch as I never knew will it stay on or is it going to turn the contact off after two seconds.
Further to this it had to be pushed hard with a thumb at a certain piont to get activated.
This is one of the reasons why I sold 4B SST C.
The new one works fine and looks the same as the old one.
Maybe the old one was meant to be swithed off after 20 years so it doesn´t really matter!
