BE/S 4.20.3.2 4-Fold Binary Input Device Manual

This document describes the ABB BE/S 4.20.3.2, a 4-fold binary input device for connecting potential-free contacts to the ABB i-bus® KNX system via internally generated scanning voltage. It details technical specifications, functions including KNX Data Secure support, switching, dimming, blind control, light scenes, and logic operations, along with mounting and connection instructions.