GDoor is a project to collect and document findings about the Gira TKS Door System, all figured out by reverse engineering. Gira is a german manufacturer of house appliances, including door systems. These systems are connected via a proprietary two wire bus system.

The GDoor hardware adapter supports the following features:

• Interfacing the bus messages with your favorite home automation software via MQTT.
• Listening to the bus, e.g. to trigger notifications on mobile devices when a door bell button is pressed
• Sending to the bus, e.g. to open the door
• Support for HomeAssistant, openHAB and many more.