[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 1657 SIGFOX Q&A Downlink , Sigfox , Transmit Related Knowledge Base Posts -[SIGFOX] Can I also send data to a SIGFOX end-point to control my device?[SIGFOX] Is the sensitivity a function of the chipset or is it something we can enhance with an LNA if necessary?[SIGFOX] Your spec sheet for RC1692HP-SIG has changed from VCC_PA to 3.6V maximum whene it was earlier 5V. What effect will this have?