The IF-4070 controller collects data from connected Interflex terminals and transmits the data in real time to the host system for time recording and access control. It sends booking decision back to the terminals. The controller is easy to install into 19” slide-in racks. When installed in a secure area, it is protected against sabotage and tampering. If the housing is opened without authorization, then a monitoring contact sends an alarm to the higher-level IF-6040 access control system. The controller can be integrated into an Ethernet network and can be operated over the internet thanks to asymmetric PKI encryption. If the host system is offline, the controller works locally, since it stores all data that are needed for offline operation. The IF-4070 is available in four versions: for two, four, eight or 16 terminals.