13 External control output [DEVICE]This external control output is used for alerts.Using this unit’s settings, this connector is controlled inresponse to the reception of alert signals from the All-In-One Headsets or Belt Packs and to the signals from thealert input. Alert input [ALERT]This external input connector is used for alerts. It isconnected to a sensor or other external device. Serial port [RS-232C]This port is for controlling the system from a personalcomputer.For details, contact the store where you purchased thisunit. Video output [VIDEO OUT]This NTSC type of composite connector is for outputtingcamera images.For details, contact the store where you purchased thisunit. Network port [10BASE-T/100BASE-TX]This is connected to a 10BASE-T or 100BASE-TXnetwork, and it connects the Network Camera with theCenter Module.w Side panel Reset buttonPress this button using a fine-tipped object when this unitis not operating properly to restart this unit. SD card slotThis is where an SD card is inserted.SD card access LEDThis indicates the status of the SD card access. While theSD card is being accessed, it blinks in green.p While the SD card access LED is blinking, do noteject the SD card, disconnect the power plug or pressthe reset button. Performing any of these actions maydestroy the data on the card.ImportantEnglish