[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 1221 SIGFOX Q&A Related Knowledge Base Posts -[SIGFOX] How shall the data in the message be formatted?[SIGFOX] What is a SIGFOX zone?[SIGFOX] How can I test SIGFOX in my application?