The ABB UD/S4.210.2.1 LED dimming actuator is suitable for dimming retrofit LED lamps or low voltage halogen lights with conventional transformers. It has an automatic load detection and a separate N-connection per channel, with a parallel output connection for increased output power. Enables easy manual operation without bus voltage and extensive test and diagnostic functions via i-Bus tool.


The ABB UD/S4.210.2.1 is a 4-fold KNX LED dimming actuator with multichannel options, optimized for retrofit LED lamps.

Recommendations: (totaling 4 users)
Ask your question  Propose
Advertisement Advertise here?
Flex Link Pro ad

Compatible products to ABB UD/S4.210.2.1

Suggest compatibility
KNX Association KNX
KNX Association

669 11 96 383
Bus Systems


Questions and discussions

Ask your question
your user name
asked by your user name
No questions yet

What do you want to know? Do you have a question about UD/S4.210.2.1?

Ask the community!

Show all questions


    No updates

    Currently, there is no news regarding this product. Sign up now, to stay tuned for updates, bugs and features.

Similar Products

Suggest a product
Show all similar products

Was the content helpful to you?

Ask your question
Advertisement Advertise here?
Udemy IT certification ad