BE/S 8.20.2.1 8-Fold Binary Input Device Manual

This document describes the ABB BE/S 8.20.2.1, an 8-fold binary input device for coupling potential-free contacts to the ABB i-bus KNX system. It details the device's features, including manual operation keys, LED status indicators, scanning voltage specifications, and application functions such as switching, dimming, shutter control, and impulse counting.