... F Auto reset: when circuit protects and load opens, can set “reset automatically” degree and time, after some time, ... (adjustable)O Power supply: 9~12V AC(use the transformer with the controller,primary voltage 220V±10%)O Operating environment ... . Using the password can enter into the menu, password is “up down up down up up down”, according to this gradation, in normal temperature state ,press “∧” ...