Busch-Infoline 1539 U Relay Insert Installation Instructions

This document provides multilingual installation and safety instructions for the Busch-Infoline® Relais-Einsatz 1539 U, a relay insert used with a Busch humidity alarm to block water supply via a solenoid valve or to switch other devices. It includes technical specifications (230 V ~ ±10%, 50/60 Hz, 10 A rated current, IP20), wiring diagrams, and mounting procedures for a flush-type box according to DIN 049073-1.