Indicator lights or pilot lights

Indicator lights (or pilot lights) are small visual signaling devices that communicate the operational status or safety condition of mechanical and electrical equipment. They use colored LEDs or lamps to alert users whether a system is powered on, actively running, or experiencing a fault.

Common Uses and Meanings

·         Home Appliances & IT:

Indicate power status, network activity, or cycle completion.

 

·         Industrial & Electrical Panels:

Frequently wired with 16mm or 22mm panel mounts to monitor control systems and ensure safe operation.

 

·         Automotive:

Displayed on dashboards to indicate high beams, exterior bulb failures, or engine warnings.

 

Color Coding Standards

Indicator lights typically follow specific color guidelines to prevent operational confusion:

·         Red:

Danger, fault, or emergency (e.g., machine stopped or high temperature).

 

·         Green:

Normal operation, safe state, or ready to use.

 

·         Yellow / Amber:

Abnormal condition, standby mode, or caution required.

 

·         Blue:

Specific system guidance or parameter request.

 

Indicator lights or pilot lights are available from local electrical supply stores and online sources like Daraz, Aliexpress, alibaba and Amazon etc.