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This often indicates a grounding issue or poor connection on terminal 2. 5. Wiring Diagram Summary
rather than stranded cable for more reliable terminal connections. Intercoms R Us Documentation & Resources urmet 1131 manual full
Check the connection on terminal 9 and the corresponding common terminal 6 .
Insert the wires into their respective terminals (1, 2, 6, 7, and 9) according to your building's wiring diagram. This public link is valid for 7 days
The (specifically the 1131/1 or 1131/2 models) is one of the most reliable and widely installed traditional analog intercom handsets, particularly in older residential apartment buildings, houses, and office complexes. Known for its simple design, electronic call tone, and robust build, this handset is a popular choice for replacing broken, older units, or upgrading audio entry systems.
A: The 1131 models typically come with a coiled handset cord. You may be able to find a replacement by contacting Urmet support or searching for specific spare parts for the 1131 series. Can’t copy the link right now
To successfully wire or replace the Urmet 1131, you must understand its internal terminal block. Opening the casing reveals five primary screw terminals numbered according to Urmet’s standard legacy system. Terminal Number Function Description Technical Detail Speaker (Earpiece) Receives audio from the outdoor entry panel Terminal 2 Microphone Sends audio from the handset to the outdoor panel Terminal 6 Common Ground The shared negative/return path for the system Terminal 7 Call Signal (Buzzer) Receives the 12V AC voltage to ring the buzzer Terminal 9 Door Release Completes the circuit to trigger the electric lock Step-by-Step Installation Instructions Tools Required Small flathead screwdriver (for terminal screws) Phillips head screwdriver (for wall mounting) Wire strippers Digital multimeter (optional, for troubleshooting voltages) Phase 1: Opening the Handset Look at the bottom edge of the Urmet 1131 handset.
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