Q-See QT528 - Manual (Page 10)

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2.4 Rear Panel Layout
Fig 2.5 Rear Panel
Item Name Description
1 PTZ Connect to speed dome. Y means “+”, Z means “-”
2 K/B Connect to PTZ keyboard
3 ALARM IN Connect to external sensors 1-8
4 NET Network port
5 VGA port VGA output, connect to monitor
6 Video out Connect to TV/monitor
7 Video in Video input channels from 1-8
8 Audio in 4 Channels Audio input
9 POWER SWITCH Power on/off
10 + 5V and GND +5 V and Grounding
11 ALARM OUT 1-ch relay output. Connect to external alarm.
12 USB port
To connect external USB devices like USB flash, USB HDD
for backup or update firmware.
13 Spot out
Connect to monitor as an AUX output channel by channel.
Only video display, no menu
14 Audio out Audio output, connect to amplified speaker
15 POWER INPUT DC12V
16 FAN For cooling the device
Tab 2.1 Back Panel Ports
2.5 Remote Control
Uses two AAA size batteries, to install batteries:
Step1: Open the battery cover of the Remote Control
Step2: Insert batteries. Position the poles (+ and -) correctly
Step3: Replace the battery cover
Notice: If the remote does not work:
1. Check batteries poles
2. Check the remaining charge in the batteries
3. Check to see if IR controller sensor on DVR is blocked
If it still doesn't work, contact the Q-See customer service dept to replace the remote control.
The interface of remote controller is shown in Fig2.6 Remote Controller.