What is the correct way to install the intercom?

What is the correct way to install the intercom?

When you have defined the mounting location for the intercom, prepare the installation: 
  1. Use a 90mm core drill to create a hole approximately 60mm deep. 
  2. Shape the opening so that the intercom housing fits properly. 
  3. Don't forget to allow space for cable routing.
You should always leave enough cable to create a loop inside the wall. This makes installation easier and prevents tension on the connections. In addition, it means future maintenance or removal is easier and less likely to cause damage to the product or the wall. 

Idea
There is a drilling template included in the packaging. This helps ensure accurate positioning of the mounting holes and helps achieve a precise installation.