To discover the doorbell you need to enable the Byron SX modus. Once the doorbel is programmed I closed the Byron SX mode en the doorbell is still working. Doorbell is now listed under switches as: Lightning 4, PT2262, Doorbell.

Now all sensors and the doorbell are working fine!

Problem Solved ...

Thanks for your reply! It explains a lot to me.

But it stays strange to me that one of the sensors is working perfectly with both protocols enabled and the other 2 don't (exact the same sensors and bought in one buy). Al sensors are working on lightning5 protocol.

Thanks again for your time and ...

Hi All,

I've bought cheap chinese doorcontact (3 pcs in 1 buy) and they work perfectly in domoticz, until I activated Byron SX (Byron is needed for my doorbell).

When I have activated Byron SX in domoticz, only 1 doorcontact is working. The other 2 don't work anymore. I also tested in RFXmanager ...