Planet Technology DVR-471 - Manual (Page 11)

4/16-ch H.264 Digital Video Recorder
2.2 Rear Panel
Item Description
1 VIDEO IN BNC input ports for cameras
2 SPOT BNC output port for spot monitor
3 VIDEO OUT BNC output port for the main monitor
4 AUDIO IN RCA input port for an audio signal
5 AUDIO OUT RCA output port for an audio signal
6 VGA Output port for the VGA monitor
7 PS/2 PS/2 mouse connection port
8 ETHERNET Port for 10/100Mbps Ethernet
9 SENSOR / RS-485 / RELAY OUT
Input terminal blocks for alarm signals/Terminal blocks of
RS-485 / Relay output terminal blocks
10 POWER IN Socket for DC 12V power adapter
11 POWER SWITCH Switch to turn the power on/off