Doorman S3

ESP32-S3 intercom gateway that bridges TCS, Koch, Niko, or Scantron intercom systems to home automation.

PlatformWebfreeglobal

Doorman S3 is an open-source, ESP32-based hardware and firmware gateway that connects older wired intercom systems, such as TCS or Koch, to a home automation platform. An integrated relay can simulate button presses to control door openers or lights, and it can also work with other 2-wire bus intercom systems by monitoring their voltage levels. It's aimed at smart-home hobbyists who want to bring an existing building intercom into their automation setup rather than replacing it outright.

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