What is the ED module and ED bus

ED module:

This is a general term for all devices that have a communication protocol that allows work between the PCB responsible for the IP section and the main PCB called the ED module. There are 4 devices equipped with ED communication: HS06N, HS06NWL, HWK, HWKL.

ED bus:

This is a specialist 1-wire protocol that allows bilateral communication between the IP section and the ED module. Communication takes place with one wire, the bus is carried out on a yellow cable on a 3-pin connector. Each subordinate device in addition to the communication cable needs power cables (GND and 12VDC) to work.