The QTA MCK with Automatic Transfer Switch – ATS – has two inputs, one of which is a priority (Utility). In the absence or failure of the priority network power supply, the ATS switch signals a failure and at that moment the other power input (Generator) will be powered and the switch will automatically transfer from the Network position to the Generator position.

When the power is restabilized via the Concessionaire, the key will return to its initial position.