05
Off
Description
State of LED Indicator
The Bluetooth module is
receiving firmware from a USB
flash drive or an app.
Slow blinking at 0.5Hz
(once every second)
●
Data sending LED indicator: LED3 (red)
It indicates that the Bluetooth module is in the command & data
sending state.
● The process of sending
firmware to the device.
● The process of rewriting the SN
to the device.
● Press and hold SW1 for 15s.
Fast blinking at 2.5Hz
(once every 0.2s)
Press and hold SW1 for 5s
(within 15s).
Remains on
Not powered on and not sending
data.
●
Data export LED indicator: LED4 (red)
It indicates that the Bluetooth module is in the data export state.
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