Transmitter and receiver modules are already programmed and set by the manufacturer. Button 1 on the handheld transmitter actuates relay K14? for example, button 2 correspondingly actuating relay K24 on the receiver FE 3D. New addresses need only be programmed for the devices if you require a different push-button assignment or if several receivers are to be assigned to one transmitter or if group and central activation options are to be applied. Corresponding programming instructions can be found in our data sheets.