[SIGFOX] How many bytes can I transmit in one message to my device? You can send up to 8 bytes per message to the device (downlink). Last Update: August 8, 2017 December 5, 2016 1234 SIGFOX Q&A Downlink , Sigfox , Transmit Related Knowledge Base Posts -[SIGFOX] How many bytes can I transmit in one message from my device?[SIGFOX] How do I do the Sigfox certification[SIGFOX] “I am looking for a Sigfox module for an IoT application, and I would like to have few more informatino on the RC1682-SIG demo kit. I have an extern MCU on a dev board (cc3200 launchpad) that have extern connectors that enables UART connections (among others (SPI,I2C…)). Is it possible to send and receive message to the demo kit using my dev board and my microcontroler for my application ? “