Power outages can occur in even the most reliable networks leading to major losses and immense disruption across critical applications, including emergency systems, healthcare devices, server rooms or production lines. ATyS C25 is an entry level ATSE controller with communications. It can be used to pilot a remotely operated transfer switch, such as ATyS r, ATyS S and ATyS d M, as well as contactors. ATyS C25 ensure the automatic or remotely controlled transfer from one source to another with fixed timers and thresholds.