Analog external telephone line, Sinthesi S2, 1 button

Independent intercom device that allows the external intercom station to be connected directly to an analogue input of a PBX.
Base module equipped with 1 button (expandable up to 64 buttons using the 4-call button expansion accessory, code 1148/4), each of which can be associated with 2 numeric destinations of 24 digits (for day/night service or sequential calling), 2 independent and configurable relay actuators, each of which can be assigned up to 6 door-opening codes, configurable in 8 different operating modes (e.g. lighting, sequential opening, additional doorbell, gradual door opening).
Also expandable via numeric keypad accessory code 1148/6, which allows the entry of access codes or public telephone numbers or internal PBX numbers.
Main functions: auto insertion, two two-digit codes to end the conversation, two codes to activate outputs via telephone with a single pulse and two codes with a double pulse, automatic answer to incoming calls with variable ring count, option to configure the time before hang-up if a new selection is made, two codes to deactivate the intercom system from the telephone, self-powering, label illumination from external power supply.
Speaker and microphone volume adjustment, with electronic volume adaptation via trimmer.
Easy hardware configuration via DIP switch, and software programming from the telephone via DTMF tones (also remotely, with a phone call to the Sinthesi S2 module) and from PC using dedicated software and USB interface (1148/9). Programming access is password protected.