[SIGFOX] How many bytes can I transmit in one message from my device? You can send up to 12 bytes per message from the device (uplink). Last Update: August 8, 2017 December 5, 2016 2116 SIGFOX Q&A Related Knowledge Base Posts -[SIGFOX] What does P1 and P2 certification means?[SIGFOX] What is the SIGFOX communication protocol?[SIGFOX] Are the modules certified for FCC and Australia are exactly the same (hardware-wise) and if so, how they are switched to work under FCC or Australian standards