Proper wiring is critical when replacing an older unit. The Urmet 1131 uses specific terminal markings to ensure voice and lock functions work correctly: Description Input for the electronic ring signal. 1 Receives audio from the outdoor panel. 2 Microphone Sends audio to the outdoor panel. 6 Ground (0V) Common ground for all functions. 9 Lock Release Operates the electric door strike. 10 Lock Common Common terminal for the lock switch (often linked to 6). Installation Instructions
: Speech In (Speaker) – where you hear the visitor.
To help you finalize your intercom setup or fix a specific wiring issue, let me know: urmet 1131 manual full
Comprehensive User & Technical Manual: Urmet 1131 Series Mains Power Supply Unit
: If the existing handset is missing, you can often find wiring diagrams for your specific building system on professional sites like Intercoms R Us . Proper wiring is critical when replacing an older unit
Broken connection on Terminal 9 or faulty door switch.
Receives audio signals from the external door entry panel speaker. Microphone Input 2 Microphone Sends audio to the outdoor panel
: Speech Out (Microphone) – where your voice travels to the door panel.
No, not directly. The 1131 is pure analog 2-wire. You would need an adapter like the Urmet 1130/92 gateway.
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Note: In many standard installations, terminals 6 and 10 are linked together via a metal jumper or wire loop to establish a shared common ground for both speech and lock release functions. Step-by-Step Installation & Handset Replacement 1. Preparation and Safety