Nice device. I am waiting for the manual to be sent so that I can start using it.
Microcontroller included is stc89c52 without rc ending. It is NOT flashable over UART, so once you receive evalboard you need to swap microcontroller. I spent a lot of time trying to flash it, microcontroller leaves bootloader once you try to transfer new software. Be aware of that and don't waste your time as I did. Seller claimed that it works and was not helpful at all.