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• 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.
• For base station: 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
Choose only batteries, chargers, and accessories approved for use with this model by the
device manufacturer. The use of any other type of battery, charger, or accessory may
invalidate any warranty for the device, may be in violation of local rules or laws, and may be
dangerous. please contact your dealer for information about the availability of approved
batteries, chargers, and accessories in your area.
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 elec-
trolyte 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.
• Do not dispose of batteries in fire as they may explode. Batteries may also explode if
damaged.
• Danger of explosion if battery is incorrectly replaced. Recycle or dispose of used batteries
according to the local regulations or reference instruction supplied with your device.
Cleaning and Maintenance
• The device, battery, and charger are not water-resistant. Keep them dry. Protect the device,
battery, and charger from water or vapor. Do not touch the device or the charger with a
wet hand. Otherwise, it may lead to a short circuit, a malfunction of the device, and an
electric shock to the user.
• Do not place your device, battery, and charger in places where they can get damaged
because of collision. Otherwise, it may lead to battery leakage, device malfunction, over-
heating, fire, or explosion.
• Do not place magnetic storage media such as magnetic cards and floppy disks near the
device. Radiation from the device may erase the information stored on them.
• Do not leave your device, battery, and charger in a place with an extreme high or low tem-
perature. Otherwise, they may not function properly and may lead to a fire or an explosion.
• Do not place sharp metal objects such as pins near the earpiece. The earpiece may attract
these objects and hurt you when you are using the device.
• Before you clean or maintain the device, power off the device and disconnect it from the
charger.
• Do not use any chemical detergent, powder, or other chemical agents (such as alcohol
and benzene) to clean the device and the charger. Otherwise, parts of the device may be
damaged or a fire can be caused. you can clean the device and the charger with a piece of
damp and soft antistatic cloth.
• Do not dismantle the device or accessories. Otherwise, the warranty on the device and
accessories is invalid and the manufacturer is not liable to pay for the damage.
Emergency Call
you can use your device for emergency calls in the service area. The connection, however,
cannot be guaranteed in all conditions. you should not rely solely on the device for essential
communications.
