The 6321/38-20-500 is a premium 3/6-gang MF/IR RTC (Multi-Function/Infrared/Real-Time Clock) control unit from ABB’s i-bus® KNX Triton series, featuring an integrated KNX bus coupler that eliminates the need for external coupling hardware, streamlining system installation and reducing complexity. Its sleek curved metallic design combines modern aesthetics with industrial durability, while dedicated labelling fields enable clear identification of functions such as lighting, climate control, and blind operation.

Equipped with left/right rocker switches, it supports comprehensive KNX operations: switching, dimming, blind/shutter control, value sending, light scene activation, and fan speed regulation. The unit incorporates master/slave configuration and base-load operation, alongside a built-in room thermostat function to trigger heating, ventilation, and fan-coil systems, enabling precise climate control. Integrated IR remote control and RTC functionality allow time-scheduled automation and remote operation, making it ideal for luxury residences, high-end hotels, and commercial offices. Built to ABB’s rigorous quality standards, it ensures long-term reliability, seamless interoperability with KNX devices, and robust performance, serving as a core component of intelligent building management systems (BMS) to optimize energy efficiency and user comfort.