The other empty interfaces are used for custom communication or connection to the display screen. After the protection board is initially wired, it needs to be activated and started up to search for the Bluetooth signal.
During activation, the buzzer of the protection board emit a 'beep', the left red working light starts to flash, and the right blue Bluetooth light also flashes.
There are several startup methods for the protection board:
As shown in the figure, the startup wire of the communication port is connected to a switch (regardless of positive and negative poles).
Short- the switch to activate and start up.
The function of the switch:First: When the protection board is off, short-pressing the switch can activate and start up;
when the protection board is in standby, short-pressing can wake up and release the standby.
Second: In the parameter setting→manufacturer parameters→function configuration 1, check the [Long to shut down1 function, and you can achieve shutting down by long-pressing the switch for 10 seconds and releasing it.
It depends on personal needs whether to reserve the switch button
Colour: AS Shown
Material: PC+Aluminum Alloy
Specification:120A
Package Contents:
1 x Battery Protection board(Due to different product batches, the appearance , which does not affect the use)
Logistics information
Our products are located in Hong Kong, China, and the logistics speed depends on your specific location. According to our experience, it usually takes about 15-20 days of transportation time
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How to choose the correct size:
Step 1 Please measure your foot length carefully.

Step 2 Please choose the correct size according to your foot length and chinese size.
For example, If your foot length is 255 mm , you should choose the size 8.
