Side-by-side reference

Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

First referenceCompare with

LAMP TEST

Symbols

Push-to-test indicator lamp

A push-to-test indicator lamp allows a documented local test of the lamp circuit. The test path and normal indication path must be distinguished.

Drawing use: Schematic
Application: Control circuits
Reference family: IEC / Manufacturer

A distinction that matters

Lamp test verifies an indication path; it is not automatically a complete alarm-system test.

Full reference

Lamp

Symbols

Indicator lamp

An indicator lamp shows an operating condition defined by its circuit and label. The generic representation identifies an indicating element; it does not define what illumination means, the supply voltage or whether the device is continuously lit or flashing.

Drawing use: Schematic
Application: Control circuits
Reference family: IEC / IEEE / ANSI

A distinction that matters

An indication mark does not establish that equipment is safe, isolated or de-energised. Its meaning comes from the full circuit and operating documentation.

Full reference

Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.