Products 3.5 -inch screen 4.3 -inch screen 7 inch screen 2.4 -inch screen 2.8 -inch screen Core board 5 inch screen 10.1 -inch screen Model Size storage Serial communication port Working temperature ASTK028系列 2.8 inches 16Mbyte SPI NOR Flash RS485 -10℃~50℃ 2.8寸串口屏 2.8" 16Mbyte SPI NOR Flash TTL level serial port /RS232 communication -20—60℃