Technical Support
Product Supply
Industry-leading quality
Secure payments
Couldn't load pickup availability
Start your projects with confidence. Our team is here to help.
Ask our experts
The Siemens UP 220/21 KNX Push-Button Interface for LED Control is a 2-fold KNX/EIB binary input and output interface. Use it to link standard switches, pushbuttons, or LEDs to your KNX building automation network.
Technical Specs