The Flexible RTU is a modular Controller that is ideally suited to low or medium I/O counts. It supports a range of I/O modules including Status Inputs, Control Outputs, DC Analogues, AC Analogue measurements and Setpoint Outputs. All modules are certified for use in power utility applications. The unit is ideally suited to Secondary Automation where it can monitor pole top switches or ground-mounted RMUs as well as offering a cost-effective solution for extensible MV/LV switchgear applications. The Flexible RTU provides powerful local functionality at the secondary distribution level for fault detection and local RMU control, net power flow management from DER sites with failsafe operation, and IED gateway applications (incl. 61850), while meeting the highest performance.