串口通讯工具，可自动延时一定时间发送数据，发送的数据从0x00到0xFF，可设置最小长度和最大长度，适合专业串口调试和性能检测使用。-Serial communication tools, can automatically send data to a certain period of time delay, send the data from 0x00 to 0xFF, to set the minimum length and maximum length, suitable for