BE/S 8.20.1 Binary Input Device Manual

This document describes the ABB BE/S 8.20.1, an 8-fold binary input device for coupling potential-free contacts with the ABB i-bus® EIB/KNX system. It details the device's functions, including switching, dimming, shutter control, light scene storage, and impulse counting, along with its technical specifications such as polling voltage, sensing current, and manual operation keys.