Description

The Steinel 089221 Universal 2-Channel Input UI2 KNX-S is a versatile KNX input module designed to enhance flexibility and integration within intelligent building automation systems. Featuring two independent, freely configurable inputs, it enables the connection of standard voltage-free contacts such as switches, push buttons, sensors, or window contacts. Each input can be parameterised through ETS software to perform a variety of tasks, including switching, dimming, scene activation, or sending temperature and status values.

The UI2 KNX-S also supports connection to external NTC temperature sensors, providing accurate temperature readings for HVAC control and environmental monitoring applications. Designed for secure communication, the device integrates KNX Data Secure to ensure encrypted, tamper-proof data exchange across the KNX bus.

Compact in design and easy to install on a standard DIN rail (2 TE width), the Steinel Universal 2-Channel Input UI2 KNX-S offers flexible functionality, secure communication, and dependable performance — making it an ideal choice for modern smart building installations.