Dahua IR High Speed Dome Camera User Manual page 44

(Attention: when configuring this function, firstly, [Auto] option should be
chosen for [B&W/COLOR MODE] in [Camera Setup]. When the camera
module turns to Black&White mode, the IR lamp will be turned on.
B. If [PHOTOSENSE] is chosen, the IR lamps are controlled by the
Photosensitive Resistor, when the illumination is too low to be sensed by the
Photosensitive Resistor, the IR lamps will be turned on.
When the configuration finished, press [IRIS+] key to save and return to the
upper grade menu. Press [IRIS-] to exit the configuration without saving.
7.3.4 CLEAR THE CONFIGURATION
1. Press 95+PREVIEW key to enter the main menu.
2. Operate the joystick upwards or downwards to move the cursor to
[SYSTEM INFO], press [FOCUS+] key to enter the lower grade menu.
MAIN MENU
→1 SYSTEM INFO
2 CAMERA SETUP
3 AUTO-RUN
4 LANGUAGE
IRIS-: EXIT
SYSTEM INFO
1 EDIT SPEEDDOME TITLE
2 TITLE DISPLAY SETUP
3 PAN/TILT SETUP
→4 CLEAR THE SETUP
IRIS+: RETURN
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ENGLISH
IRIS-: EXIT