What is the meaning of the color of the indicator light of the button indicator light?

The color of the button indicator light plays a vital role in both the electrical and automation fields. They provide operators with clear information about the status of the equipment or the operating command.

1.The red indicator light
Meaning: This usually means that there is a danger, emergency or abnormal situation, reminding the operator that he must act immediately.
Applicable scenarios are:
In high-risk conditions such as equipment failure, lubrication system depressurization or temperature exceeding the safety limit.
When the protection device is activated to cause shutdown and may contact live or active parts.
This is a button for emergency shutdown, the purpose is to quickly disconnect the power supply of the equipment in an emergency.

2. The green indicator light
Meaning: It means that the equipment or system is in a safe and normal operating state.
Applicable scenarios are:
When the equipment is in normal working condition, the control system is operating stably, and the ventilation system is working normally.
The use of the start button means that the equipment is about to start.
In the power distribution system, the green indicator light is often used to indicate the closing condition.

3.The yellow indicator light
Meaning: This is to alert the operator, meaning that the situation is changing or may change soon.
Applicable scenarios:
When critical parameters such as temperature and pressure are abnormal, the device can still withstand an acceptable short-term overload.
This is used to describe the equipment's readiness or emergency operation.

4.Blue indicator lights
Meaning: In addition to the three colors of red, yellow and green, it also includes other special meanings.
Applicable scenarios:
The device has unique functions such as remote control and selection of switches in specific "set" positions.
In some specific devices, the blue indicator light may be used to indicate a specific condition or parameter of the device.

5.White indicator light

Meaning: This is usually used to indicate the general model or status of the device, rather than a specific intention.
Applicable scenarios:
When it is impossible to accurately describe the operating status of the device with multiple colors such as red, yellow, and green.
Used to describe the state of the device in certain non-emergency or non-dangerous states.