⑦ Audio In/Out
Connect up to 4channels of audio for recording and playback. To record
sound, connect microphone on input connector and to listen a speaker on
the output port,
⑧ RS232 Connector
Use to connect with external devices such as POS and Keyboard controller
⑨ USB Connector
Use to connect with USB devices like USB External HDD or USB Flash
Device.
⑩ Network Port
Connect LAN cable with a RJ45 connector to use the network.
Network application allows the user to monitor live, search and setup the
DVR.
⑪ RS485
As a signal Communication port, this port is used for PTZ camera control.
⑫ SENSOR
Connect the sensor signal cables to this input. The sensor signal cables
must be connected to a channel number and the GND port.
⑬ ALARM
Connect external alarm devices on this port.
⑭ NTSC/PAL selection
Select input signal according to NTSC/PAL region. If the wrong mode is
selected it can cause black/white pictures or the pictures to roll.
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