red green yellow lights that are used indicate the working status |
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| navigate by keyword : lighting yellow green light signage design gadget brand number red circle art font glass advertising organ electronics toy lights used front control panel indicate working status call coll conll industry technology equipment industrial system machine work manufacturing electric electrical safety emergency warning signal security alarm power factory production plant background button electricity lamp switch automatic device process engineering instrument indicator danger tool tower concept accessories stop color reset shutdown machinery problems colorful protection |
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| Red, green, yellow lights that are used to indicate the working status in front of the control panel |
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