Abus Security-Center Ecoline TV7065, Руководство по установке

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8. To prevent damage or sabotage to the camera module, you can secure
the dome fixing with a screw.
9. If no picture appears on the monitor, check the following:
• Is the monitor switched on and is the level of contrast and brightness set
correctly?
• Is the video cable between the camera and monitor connected properly
(also check the resistor settings)?
• The IR LEDs switch on automatically if light intensity is less than about 1
lux.