It is possible to replace the current Home + Security video station with Classe 300EOS: - Villa or single/two-family house: replacement without modification of the video door entry system wires - Multi-family building: depending on the characteristics of your installation, it may be sufficient to replace the apartment station or it may be necessary to add a dedicated power supply, code 346020 For the sizing of installations serving several families, refer to the general installation rules in the Technical Instructions for the 2-wire system