Exon site controller is an embedded system that is responsible for the entire operation in the field, collects all data from the pump, vehicle recognition and tank and sends it to the Exon servers. It has the feature of instant online and offline operation with pump, vehicle recognition and tank systems. Even if the internet connection is lost in its environment, Exon communicates with other devices in its network on its own network, collects and records operational data instantly and sends this data to the server as soon as it connects to the internet.