Switch or binary sensor exposed to KNX bus

[Jpsy (Jörg Wagner)]

geertmeersman is right:
The fact that the expose method exists in the KNX component leads many users to believe that this is the only way to transport data from HA to the KNX bus. But you can directly send data to KNX group addresses by using HA’s KNX switches, covers etc. and simply modifying them in HA through the standard service calls like switch.turn_on.

Here is a similar question where I posted an automation fragment:

Exposing a boolean value to a KNX group address possible?

There is a completely different approach to solve the OP’s problem. The fact that the expose method exists in the KNX component leads many users to believe that this is the only way to transport data from HA to the KNX bus. But it is not. The right way to solve this task is to create a KNX switch in HA and bind it to your boolean KNX group address. Then you can simply write to the HA switch with switch.turn_on / switch.turn_off and the state change will be copied to the KNX bus. switch: - p…

You may also check my KNX Cookbook. I am about to add more stuff there:

KNX Cookbook (legacy)

The KNX Cookbook has moved to the Community Guide section. Please continue any discussions there: