STEINEL KNX-S System Component UI2 KNX-S Universal Interface Module, 2 Inputs, Flush-Mounted, KNX Bus Powered 089221

With two independent channels and KNX bus connectivity, the STEINEL KNX-S System Component UI2 KNX-S (089221) brings flexible binary and analog input handling to building automation. It supports switching, dimming, blinds, scene control, counting, and temperature measurement, all programmable via ETS.

Overview

The UI2 KNX-S is a flush-mounted universal interface module designed for the KNX-S system. It provides two inputs for potential-free contacts or NTC temperature sensors, enabling integration of conventional switches, sensors, and other devices into a KNX installation. Power is supplied directly from the KNX bus, simplifying wiring.

What stands out

• Two independent channels for versatile input handling
• Supports binary and analog inputs, including NTC temperature sensors
• Bus-powered with low current consumption of approx. 5 mA
• Software-configurable via ETS for flexible function assignment
• Compact flush-mounted design for installation in standard switch boxes

Technical details

• Product type: KNX Universal Interface Module
• Number of inputs: 2
• Input type: Binary (potential-free contacts), Analog (NTC temperature sensors)
• KNX bus connection: Yes
• Power supply: Via KNX bus (21-30 V DC)
• Current consumption: Approx. 5 mA
• Installation type: Flush-mounted
• Protection class: IP20
• Operating temperature: -5 to +45 °C
• Functions: Switching, dimming, blinds, value transmitter, scene control, counter, temperature measurement
• Programmable: Yes, via ETS
• Input cable length: Max. 3 meters
• Housing material: Plastic
• Channels: 2 independent channels
• Compatibility: KNX-S System

Our verdict

A reliable and flexible interface module that expands KNX installations with two configurable inputs, ideal for integrating conventional switches and sensors into smart building automation.