How does communication between devices in the NOW System take place? 27 April 2021 17:58 Updated The Connection Unit communicates with NOW devices via radio frequency (868Mhz). Related articles Connection Unit Setup and Configuration Wizard What do I need for the Connection Unit to work? Where should the Connection Unit be installed? Connection Unit LED won't turn on, what should I do? I don't have an Ethernet cable, can I connect the Connection Unit to WiFi? Comments 0 comments Please sign in to leave a comment.