If you want to test communication function with the model “FAT810W”

Only the model “FAT810W” is loaded with Application firmware “ROM-1069” that demonstrates the payment application. Other FAT810 terminals are loaded with Application firmware “ROM-0935” that simulates the communication protocol application of FAT800 terminal, such as TCP communication, I/O controls, etc. To try communication function with “FAT810W”, its Application firmware needs to be changed to "ROM-0935". However, if you want to use both payment and communication functions with “FAT810W”, refer to our source code samples to develop your own firmware.