Ash2020 It's explained on one of their forums. See here: https://forum.banggood.com/forum-topic-353353.html

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kaweeporn can you share the wire meaning (wiring diagram)

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banggood @kaweeporn Dear customer,
Thanks for choosing Banggood and sorry for your any inconvenience came up with the product.
If you need any technical supports, please contact us:http://www.banggood.com/Contact-Us_hi111. We will help you solve the problem as soon as possible.
Best regards,
Banggood Team

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banggood @gpslvr Dear customer,
Thank you for choosing Banggood and sorry for your any inconvenience came up with the product.
If anything about the items quality problem, can contact us via this link:http://www.banggood.com/Contact-Us_hi111, and we will give you a good solution.
Best regards :)

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