The manual details the following screw terminals on the back of the unit:
Note: The Urmet 1131 is obsolete. For current models, refer to Urmet 1150 series manuals. urmet 1131 manual
Standard models include one door-release button. Variants like the 1131/1 can accommodate three additional buttons for services like stair lights or intercom. Dimensions: Approximately 217mm x 77mm x 56mm. Material: White ABS plastic casing. Terminal Connections Urmet 1131 (Electronic Call) - Intercoms R Us The manual details the following screw terminals on