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Thanks for replying. We have 15 apartments in the same building. Not everyone agree to change all the system so i want to change my apartment indoor monitor

Hi all. I just moved to new apartment and want to upgrade the entry handset+monitor. As i know it is analog and very old. Found in AliExpress analog intercom with touch screen but don't know how to wire it. Also thinking to buy analog to digital converter. I attached some pictures of my old...