Huawei ETS2252+ User Manual page 11

Operating Environment
Do not use or charge the device in dusty, damp, and dirty places or places with magnetic fields.
Otherwise, it may result in a malfunction of the circuit.
On a stormy day with thunder, do not use your device, to prevent any danger caused by
lightning.
When you are on a call, do not touch the antenna. Touching the antenna affects the call quality
and results in increase in power consumption. As a result, the talk time and the standby time
are reduced.
Use accessories authorized by the manufacturer. Using unauthorized accessories will render
the warranty null and void.
Because the device needs to disperse heat during working, place the device and the power
supply in a ventilated and shady place. Never cover the device, put objects on it, or place it
near water, fire as well as inflammable and explosive materials.
This device should be installed and operated with a minimum distance of 20 cm between the
antenna and all persons.
Keep the ambient temperature between -10°C and 45°C while the device is being charged.
Keep the ambient temperature between -10°C to 55°C for using the device powered by a
battery.
Safety of Children
Comply with all precautions with regard to children's safety. Letting the child play with your
device or its accessories, which may include parts that can be detached from the device, may be
dangerous, as it may present a choking hazard. Ensure that small children are kept away from the
device and accessories.
Accessories
Use the accessories delivered only by the manufacturer. Using accessories of other
manufacturers or vendors with this device model may invalidate any approval or warranty
applicable to the device, result in the non-operation of the device, and cause danger.
Battery and Charger
Unplug the charger from the electrical plug and the device when not in use.
Do not connect two poles of the battery with conductors, such as metal materials, keys, or
jewelries. Otherwise, the battery may be short-circuited and may cause injuries and burns on
your body.
Do not disassemble the battery or solder the battery poles. Otherwise, it may lead to
electrolyte leakage, overheating, fire, or explosion.
If battery electrolyte leaks out, ensure that the electrolyte does not touch your skin and eyes.
When the electrolyte touches your skin or splashes into your eyes, wash your eyes with clean
water immediately and consult a doctor.
If there is a case of battery deformation, color change, or abnormal heating while you charge
or store the battery, remove the battery immediately and stop using it. Otherwise, it may lead
to battery leakage, overheating, explosion, or fire.
If the power cable is damaged (for example, the cord is exposed or broken), or the plug
loosens, stop using the cable at once. Otherwise, it may lead to an electric shock, a short
circuit of the charger, or a fire.
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