Q-See QSDT404C - Manual (Page 4)

4
4 Buttons On Receiver
4.1 Mode switching Switch between quad mode and single channel mode
4.2 Pairing Pairing the cameras and receiver
4.3 Menu OSD menu display
4.4 Auto Scan Switching the channels automatically with set time interval
4.5 Right/CH2 Move to the Right / Switch to Channel 2
4.6 Up/CH1 Move Up / Switch to Channel 1
4.7 Manual Scan Switching the channel manually
4.8 Down/Ch3: Move Down / Switch to Channel 3
4.9 Left/CH4 Move to the Left / Switch to Channel 4
4.10 SMA Antenna SMA antenna plug in
4.11 Power LED Red Light when power on