For the 6600 series, how do I encode the intercoms and video door entry modules with the primary ("master") and secondary ("slave") identification?

To set the primary identification code, follow these steps: - Simultaneously press and hold the SPEAK/LISTEN ("speaker" system) and AUTOSTART ("square" symbol) - wait for the red LED to turn on and start flashing - release the the SPEAK/LISTEN and AUTOSTART buttons and press and hold the LOCK button ("key" symbol) - wait for the “beep” and then release the LOCK button - you have 30 seconds to press the button on the main plate that you want to associate with the intercom you are configuring, or enter the code if the plate has an alphanumeric keypad. To set the secondary identification code, follow these steps: - Simultaneously press and hold the SPEAK/LISTEN and AUTOSTART buttons - wait for the red LED to turn on and start flashing - release the SPEAK/LISTEN and AUTOSTART buttons - press and hold the LOCK and AUTOSTART buttons - wait for the “beep” and then release the LOCK and AUTOSTART buttons - you have 30 seconds to press the button on the main plate that you want to associate with the intercom you are configuring, or enter the code if the plate has an alphanumeric keypad. Note: you can only manually encode up to a maximum of 3 units. Beyond this, you need to use the ELVOX configurer or the SaveProg software. The above instructions are valid for item numbers: 6601, 6611, 6621, 6701, 6711, 6721, 6601/AU, 6611/AU, 6701/AU, 6711/AU To download the guide for programming which shows how to set the basic configurations Video door entry systems series: Two-Wire, for the Giotto Series, Petrarca, 6600, 6800 and 7200, simply click on this link: Due Fili visual programming guide