The Homira KNX 4ch Mini Interface (HM-UN-04) is a compact universal input/output module designed for flexible integration of conventional switches, sensors, and status indicators into KNX systems. It provides 4 independent channels, each configurable as a binary input, temperature sensor input (with NTC), or LED output (5 V/12 V). The device supports short/long press differentiation, pulse counting, switch and dimming control, scene and logic functions, and status feedback.
It enables efficient use in concealed or device-mounted applications, ideal for controlling lighting, blinds, HVAC, or monitoring external contacts. The module is bus-powered, configurable via ETS 5 or later, and supports KNX Data Secure, ensuring safe and reliable operation in residential and commercial installations.