Do you want to have a personalised external battery?
你想拥有一个独一无二的外置电池吗？
External battery supply electricity for the door lock, thoughtful and more humanity.
可外接电池盒给门锁供电，考虑周到，更加人性化。
Adding an external fan can also cool the battery.
加一个外置风扇可以降低电池温度。
To fully charge a drained battery, connect the unit to external power for six hours.
若想将已耗尽的电池充到饱，请将机组连接外部电源达六小时。
Without external power source, Internal battery can ensure the time displays normally.
内置后配电池，保证无外接电源时，时间可常运转。
Without external power source, Internal battery can ensure the time displays normally.
内置后配电池，保证无外接电源时，时间可常运转。
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