... 4.5 Set the mark if F1 is effective Press F_KEY to display FL, 00 will blink at the same time ... set value will have nothing to do with the setting of F2. 4.6 Set the mark if F2 is effective ... Press F_KEY to display FL, 00 will blink at the same time, ... Keep pressing F_KEY for 3s,it will exit, if there is no operation after 1minute, it will exit automatically. 4.8 Energy ...