The 1131 is a standard replacement for the Urmet 1133 Atlantico . For more modern styling, the Urmet 1140 Signo is also compatible.
: 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
The 1131 handset typically uses 5 active terminals. If you are replacing an old unit, it is highly recommended to before disconnecting it. Description 1 Speech In Speaker (Receives audio from the entrance panel) 2 Speech Out Microphone (Sends audio to the entrance panel) 6 Common Ground/Common return for the system 9 Lock Door Release (Triggers the electric lock) CA Call Electronic call signal (The buzzer/speaker ring) The 1131 is a standard replacement for the