YitaHome HNXD-V1, Руководство по сборке

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9. Other
(1) The control board uses four 1.5V alkaline batteries. When the battery voltage
drops below 5.0V±0.2V, the screen will display "Lo-BATTE," indicating low
voltage. The battery level indicator will decrease accordingly, reminding you
to replace the batteries.
(2) If the battery voltage is insufficient, an external power source can be used.
Operating voltage: 4.6V to 6.0V.
(3) Before inserting the batteries, press and hold the password setup button.
Once the scan is complete, the display will show "CLEAR", indicating that the
passwords have been reset to 1234 and 123456.
ASSEMBLY INSTRUCTIONS
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