48
Redlight:
Ifon,abnormalconditionsappear;ifoff,noabnormalconditionsappear.
Thereare 4 keys in total: UP, DOWN,ESC, ENTER. Pressone of them can
alterthecontenttobedisplayed.Theoperationinstructionofkeywillbe
describedbelowindetails.
4.2 LCDDisplayDescriptions
TheFigureofLCDdisplayscreenisshownasfollow:
Illustrationofthespe cificareaofthedisplayscreen:
The display area is divided to four sectors:top, middle‐left, middle‐right,
bottom.