How to Use Indicator Light Color Standards
Color Coding for indicator (pilot) lights.
| Color | Picture | Typical Function | Examples |
| RED |
 |
Danger or alarm, abnormal condition requiring immediate attention. | Indication that a protective device has stopped the machine, e.g. overload. |
| YELLOW (AMBER) |
 |
Attention, caution/marginal condition. Change or impending change of conditions. | Automatic cycle or motors running; some value (pressure, temperature) is approaching its permissable limit. Ground fault indication. Overload that is permitted for a limited time. |
| GREEN |
 |
Machine Ready; Safety | Indication of safe condition or authorization to proceed. Machine ready for operation with all conditions nornal or cycle complete and machine ready to be restarted. |
| WHITE or CLEAR |
 |
Normal Condition Confirmation | Normal pressure, temperature. |
| BLUE or GRAY |
 |
Any function not covered by the above colors | Any function not covered by the above colors |
Tel: +86-021-33555507
Email: [email protected]
Add: No.655 Jiujing Road, Songjiang District Shanghai, China, 201615
