| Terminal | Signal | |----------|--------| | L1 / L2 | 2-wire BUS (to Urmet riser / power supply) | | TEL LINE | Incoming PSTN line (from Telecom socket) | | TEL SET | Optional parallel telephone | | NO / C / NC | Relay 1 (e.g., electric lock) | | NO2 / C2 / NC2 | Relay 2 (e.g., auxiliary) | | +12V / GND | Optional external power (if not powered via BUS) |
Common models include:
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Finding the is the first step to a perfectly functioning video door phone system. Whether you are a DIY homeowner or a professional installer, the manual is your blueprint.
In some older Urmet systems, the colors of the wires may not be standardized. Always refer to the wire terminal number from the old unit, not the color. 4. Typical Wiring Diagram (4+n) | Terminal | Signal | |----------|--------| | L1
Ensure the intercom wires are shielded and separated from 230V electrical wires. If all apartments experience the hum, the building's central power supply filter is failing.
: The unit features 9 terminals labeled 1 through 10 and CA. 1 : Speech In (Speaker). 2 : Speech Out (Microphone). 6 : Common/Ground. 9 : Door Lock Release. 10 : Lock (Supplementary/Common for lock). CA : Electronic Call signal input. Can’t copy the link right now
In a standard installation, the 4+n schematic segments functions to prevent electromagnetic interference (EMI) across speech and power lines.
Troubleshooting the Urmét 1131 requires a systematic approach. The following steps outline common issues and solutions:
Whether you are replacing an old handset, moving into a new apartment, or troubleshooting a broken buzzer, having a clear manual is essential. This comprehensive guide covers the technical specifications, terminal connections, installation steps, and universal compatibility charts for the Urmet 1131. Technical Specifications
The (Electronic Call) is an analog 4+n system handset designed for clear audio communication and door access control. This model serves as a direct replacement for the 1133 Atlantico and is compatible with most analog systems using electronic call tones. Urmet 1131 Terminal Identification