ABB i-bus KNX ABZ/S 2.1 Time Application Unit Manual

This document is the installation and operating manual for the ABB i-bus® KNX ABZ/S 2.1 Time Application Unit, a DIN rail-mounted device with a yearly time switch program. It details the device's functions (including day routines, switching times, week routines, special days, and group triggers), technical specifications, mounting, connection, commissioning via ETS3, and multilingual safety and maintenance instructions.