This is the heart of the installation. Unlike traditional analog systems that require 4+ wires, the Urmet 1131 uses a two-wire bus (polarized).
Approximately 21.5cm (L) x 7.5cm (W) x 5.5cm (H). Material: White ABS plastic for wall-mount installation. 2. Wiring Diagram & Terminal Mapping urmet 1131 manual full
The is a dependable, cost-effective analog door phone handset designed for "4+n" wire systems, valued for its straightforward design and compatibility with older electronic call tone installations. Urmet 1131 Overview This is the heart of the installation