4+N audio entry systems (traditional call or electronic buzzer).
The input terminals are located on the transformer side, usually protected by a fuse.
: Matching wires by function (e.g., ground to 6, mic to 2) rather than color, as color codes vary by installation. Pros & Cons Based on User Experiences urmet 1131 manual full
If you are looking to purchase a new unit, you can find the Urmet 1131/1 on websites such as Intercoms R Us or Door Entry Direct . Need to find the specific wire colors for your building? Share public link
The Urmet 1131 is an intercom handset designed for systems with electronic calling (not traditional buzzers). It is a universal-type handset often used to replace various older models, including the older Urmet 1130 or 786 series. Key Features: Electronic call (E-call) instead of a buzzer/bell. 10 terminals + 1 (CA) for versatile wiring options. Compatible with most standard Urmet analog systems. Door release button and conversation button. 2. Urmet 1131 Terminals Identification (Wiring Layout) 4+N audio entry systems (traditional call or electronic
Ensure the CA wire is connected correctly. If using an older system with a mechanical buzzer, the 1131 (electronic call) may not work without a converter.
Connect the wires from the wall to the corresponding terminals on the handset base based on the terminal map above. Pros & Cons Based on User Experiences If
The Urmet 1131 is designed to be largely "Plug-and-Play," but it features automatic electronic adjustments:
Check connections at terminals 1 (Speaker) and 2 (Microphone) .
Mark the drilling holes through the slots on the plastic chassis.
Ensure the power to the intercom system is disconnected at the main building breaker if possible, or exercise caution if working with low voltage.