Dahua EW5541-AS Посібник із швидкого старту - Сторінка 5
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It is recommended to ground the device to enhance reliability.
Do not touch the image sensor (CMOS) directly. Dust and dirt can be removed with air blower, or you
can wipe the lens gently with soft cloth that is moistened with alcohol.
You can clean the device body with soft dry cloth, and for stubborn stains, use the cloth with mild
detergent. To avoid possible damage on device body coating which could cause performance
decrease, do not use volatile solvent such as alcohol, benzene, diluent to clean the device body, nor
can strong, abrasive detergent be used.
Dome cover is an optical component. Do not touch or wipe the cover with your hands directly during
installation or operation. For removing dust, grease or fingerprints, wipe gently with moistened oil-
free cotton with diethyl or moisten soft cloth. You can also remove dust with an air blower.
WARNING
Strengthen the protection of network, device data and personal information by adopting measures
which include but not limited to using strong password, modifying password regularly, upgrading
firmware to the latest version, and isolating computer network. For some devices with old firmware
versions, the ONVIF password will not be modified automatically along with the modification of the
system password, and you need to upgrade the firmware or manually update the ONVIF password.
Use standard components or accessories provided by manufacturer and make sure that the device is
installed and maintained by professional engineers.
The surface of the image sensor should not be exposed to laser beam radiation in an environment
where a laser beam device is used.
Do not provide two or more power supply sources for the device unless otherwise specified. A failure
to follow this instruction might cause damage to the device.
IV
Quick Start Guide