DWR-921 4G LTE Router
User Manual
Operation Guidelines
CHAPTER 5. OPERATION GUIDELINES
Safety Rules and Conditions
Please carefully read this section before installation and connection of the device. Make sure that
the power adapter and cables are not damaged. The device should be used only as intended in
accordance with the documents.
The device is intended for use in dry, clean, dust-free, and well ventilated areas with normal
humidity away from strong heat sources. Do not use the device outdoors or in the areas with high
humidity. Do not place foreign objects on the device. Do not obstruct the ventilation openings of the
device. The environmental temperature near the device and the temperature inside the device's
cover should be within the range from 0 °С to +40 °С.
Only use the power adapter supplied with the device. Do not plug in the adapter, if its case or cable
are damaged. Plug the adapter only into working electrical outlets with parameters indicated on the
adapter.
Do not open the cover of the device! Unplug the device before dusting and cleaning. Use a damp
cloth to clean the device. Do not use liquid/aerosol cleaners or magnetic/static cleaning devices.
Prevent moisture getting into the device or the power adapter.
The service life of the device is 2 years.
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