SOS switch, component description - GF82.95-P-3210GZU
MODEL 164 with CODE (359) TELE AID emergency call system with CODE (494) USA version
Shown on model designation 164.1
Location
The SOS pushbutton switch is integrated in the overhead control panel control unit (N70).
The TELE AID emergency call system must be authorized.
Task
The SOS pushbutton switch has the following tasks:
- Actuation of a manual Telematic Alarm Identification on Demand (emergency call system) (TELE AID) emergency call
- Visual indication of the TELE AID operating condition in the event of a manual as well as automatic emergency call
Design
The SOS pushbutton switch is designed as follows:
- Cap for protecting against unintentional actuation
- Integrated LEDs for night illumination (c.. 58d) and to indicate operating condition
- A control resistor in parallel to the switch contact
Function
In the park position, electric current flows through the control resistor installed in the SOS pushbutton switch (parallel to switch contact). When current is flowing through the resistor, the emergency call system control unit (N123/4) knows that the voltage supply line and the ground line are functioning properly. When the SOS pushbutton switch is actuated, the control resistor is bridged by the switch contact. The SOS pushbutton switch is read in by the emergency call system control unit over a discreet line. When the SOS button is pressed, a manual emergency call is recognized by the emergency call system control unit and then transmitted.