13. Long Press Button Description
◆"Communication Mode" switches to the “Bluetooth SPP” mode
Pressing the button and hold for about 8 seconds, then release after a sound is heard.
◆"Communication Mode" switch to “Bluetooth BLE”mode
Pressing the button and hold for about 16 seconds, then release after a sound is heard.
◆“MCU and Bluetooth update” program
Pressing the button and hold for about 90 seconds, then release after a sound is heard, press the
button 3 times quickly within 10s.
(If the button is not pressed within 10 seconds, the system will automatically enter normal use
mode.)
*Remarks
The third function is turned off by default.
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