Upon unboxing your Urmet 1131, verify that the following items are present:

Many websites offer quick-start guides or fragmented PDFs. A "full" manual is different. It includes:

Without the full manual, you risk wiring the device incorrectly, which can damage the internal diodes or the riser power supply.

If you tell me the exact Ref number on your device (e.g., 1131/51, 1131/102), I can extract the precise wiring diagram, addressing table, or reset procedure from the official manual.

Note: The model number 1131 is most commonly associated with the Urmet 1131/21, a high-resolution analog dome camera often used in CCTV security systems. This article is tailored to that device.

Manual Reference: Section 5.1 – "Audio Adjustment." Solution:

If you are installing a new system, here is the workflow from the Urmet 1131 manual full.

Step 1: Mount the Backplate.

Step 2: Run the 2-Wire Bus.

Step 3: Connect the Door Station.

Step 4: Power Up.

Step 5: Test and Configure.

The input terminals are located on the transformer side, usually protected by a fuse.

Note: Ensure the correct input voltage (230V) is supplied. Connecting to a higher voltage will destroy the unit.

Before screwing the dome cover back on: