Videx ESK-1 Flush 2 wire audio kit

Flush 1 Button 2 Wire Smart series audio kit in aluminium finish door panel. 

13Vac transformer and wall mount 3000 Series telephone. The wiring is simply 2 wires from the transformer to the telephone, 2 wires from the telephone to the door panel, and 2 wires from door panel to 12V lock release (not included).