Category «Security and signaling»

How to connect the intercom handset yourself?

Now almost any entrance of multi-storey buildings, office buildings is equipped with an intercom. This is done in order to prevent unauthorized entry into the territory, access to which is by definition limited. What is this device, how exactly is it arranged?Device and principle of operationThe intercom is an electromagnetic locking device with the ability to remotely control the opening-closing process from the remotes (tubes) located in apartments or offices.