[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 1804 SIGFOX Q&A Related Knowledge Base Posts -[SIGFOX] How can Radiocrafts help us designing a SIGFOX unit?[SIGFOX] How many bytes can I transmit in one message to my device?[SIGFOX] “We are using the RC1692 Sigfox modules. Is it possible for us to encrypt the payload from the device to the tower, and from the tower/server to the user. As there are only 8 bytes in the upload packets, we feel this will not provide enough entropy to do our own encryption.”