| 摘要 |
An industrial signaling device having a single module with the capability of emitting different colored lights to indicate the operating condition of a machine. T he emitted light can be steady or flashing, and controlled by an external PLC or an onboard microprocessor. The PLC or microprocessor interprets incoming information and causes the color of the light or its flashing pattern to change accordingly. The light source maybe an LED, ionizable gas or flourescent. |
