KC868-HAv2: TS sensor on HAv2 bus, temp/humidity at panel, source code

[admin]

because HAv2 is "MATER", TS is "SLAVE".
The slave station operates via passive response—after all, you have a switch connected to the HV2 terminal. Since switches can be pressed in any room, it’s possible for multiple users to attempt to operate them at the same time; in such cases, simultaneous control is not supported.