Documentation is minimal and support is not available. If you have a Creality printer, it will work with limitations. Forget about changing and starting/stopping gcode. Forget jet or bed temperature scheduling. Forget how to transfer model or gcode files from computer to phone. NO documentation. And although the Revain site claims that this box can be used with printers from other brands, that too can be forgotten. I think it's true that you get what you pay for.
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