Description of Connectors:
X1 – Loudspeaker
X4 – Camera module
X5 – Button 1
SW1 – Reset button (555v3 and higher versions only)
X6 – Configuration jumpers
X7 – Induction loop output. Connector type JST SHR-02V-S.
X8 – Extending module (RFID card reader or additional switch)
X10 – Buttons 1 through 4
X11 – LAN
X12 – Servicing connector
X13 – Keypad module
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Connectors, PCB Version 555v5
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