Dahua IPC-HFW1235S-W-S2 Quick Start Manual page 5

 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.
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