[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 1311 SIGFOX Q&A Related Knowledge Base Posts -[SIGFOX] Can I build a SIGFOX receiver or base station myself?[SIGFOX] How much does it cost to use SIGFOX?[SIGFOX] How many bytes can I transmit in one message to my device?