Colour Significance of Miniature LED Indicators

SL NO	COLOUR	MEANING	DESCRIPTION	OPERATOR ACTION
1	RED	Emergency situation	Dangerous condition	Immediate action to respond to a dangerous condition (e.g. by pressing emergency stop)
2	YELLOW	Abnormal condition	Abnormal condition; anticipated critical condition	Monitoring and/or intervention (e.g. by restoring the intended function)
3	GREEN	Normal condition	Normal condition	Optional
4	BLUE	Mandatory action	Indication of a condition requiring operator intervention	Mandatory action
5	WHITE	Neutral	Other conditions; may be used if there is uncertainty about the appropriateness of RED, YELLOW, GREEN or BLUE	Monitor