User's Manual

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External impact to the product, such as from being dropped,
can damage the product.
-
Twisting and bending the product can damage the exterior casing and the
internal components.
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If this product operates abnormally in eliminating battery vinyl or replacing battery,
you should discharge it by contacting battery terminal
(+)
and
(-).
-
This product uses
2.4
GHz frequency band for wireless communication network.
Radio communications can be limited or affected by other applications which share
same frequency band, such as WiFi, Bluetooth, Zigbee, etc.
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Frequent communications, updates and screen renewals may reduce battery life time.