[SIGFOX] Which Frequency unit must I order for the client in France ? For European use (including France), you will need the RC1682-SIG module which operates on 868MHz. Last Update: September 14, 2017 September 14, 2017 1003 SIGFOX Q&A Related Knowledge Base Posts -[SIGFOX] Why should I use SIGFOX instead of other communicational protocols?[SIGFOX] What is the SIGFOX communication protocol?[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?