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

IEEE / ANSI

ANSI/IEEE push-to-test indicator lamp symbol

The press-to-test lamp form combines indication and a documented local test path. The normal signal and test supply may be different circuit paths, and the test does not automatically verify the monitored equipment feedback.

Drawing use: Schematic
Application: Control circuits
Reference family: IEEE / ANSI / Manufacturer
Form evidence: Autodesk IEEE-oriented Push to Test Lights functional form. Autodesk explicitly publishes this block under IEEE Symbol Preview. The counterpart is the matching functional concept; no equivalence of every detailed standard graphic is asserted.

A distinction that matters

A lamp-test operation and a complete alarm-system test are different verification functions.

Full reference

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

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