Do you require a confirmation after pressing the push button?
Other than the door opening, of course.
A notification sound is easily activated with a DIP switch on the inside of Prisma Button.
It will beep.
Then you will know that Prisma Button has received your demand of the door to open.
It can be extra helpful if you have trouble with your eyesight.
Standard feature activated
The notification sound is a standard feature on all models