This SLK audio 1 button kit allows calls to be answered on a standard B.T.telephone removing the need for a dedicated intercom telephone and allowing the user to answer both telephone line calls and door panel calls from the same phone. The kit includes an SLK slimline surface entrance panel with 1 call button and the telephone interface which links the telephone line and the intercom entrance panel to the telephone and a PSU. Up to 3 telephones can be called from the entrance panel. The door/gate can be released using the telephone keypad. Additional features include the ability to divert an entrance panel call via the telephone line to any number programmed. The telephone interface also includes an extensive programming menu allowing many features to be customised.