User manual
2 NDF821/NDF821E l User Manual
Safety Notice
The camera is intended for indoor use.
Make sure the supplied voltage meets the power consumption requirements of the camera before
powering the camera on. Incorrect voltage may cause damage to the camera.
The camera should be protected from water and moisture, excessive heat, direct sunlight and
cold.
The installation should be made by a qualied service personnel and should conform to all local
codes.
Unplug the camera during lightening storms or when unused for long period of time.
Operating Notice
This device should use power source as follows:
• 12VDC/24 VAC or by POE (IEEE 802.3af).
Avoid viewing very bright objects (e.g. light xtures) for extended periods.
Avoid operating or storing the unit in conditions as follows:
• Extremely humid, dusty, hot/cold environments where the operating temperature is outside
the recommended range of -10°C to +55°C.
• Close to sources of powerful radio or TV transmitters.
• Close to uorescent lamps or objects reecting light.
• Under unstable light sources (may cause ickering).