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

HAN1B

IEEE / ANSI

ANSI/IEEE Audible bell form

This reference locates audible bell in Autodesk's IEEE-oriented miscellaneous family. A bell indication identifies an audible annunciation output in a control circuit. The public library uses HAN1B for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.

Drawing use: Schematic
Application: Control circuits
Reference family: IEEE / ANSI / Manufacturer
Form evidence: Bell. Autodesk IEEE Symbol Preview: Miscellaneous, block HAN1B. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.

A distinction that matters

A bell symbol does not establish sound level or alarm priority.

Full reference

HAN1B

IEC

Audible bell

A bell indication identifies an audible annunciation output in a control circuit.

Drawing use: Schematic
Application: Control circuits
Reference family: IEC / Manufacturer
Form evidence: Audible bell. Autodesk IEC-60617 Symbol Preview — Audible indication and protective component forms; vendor family reference, not certified IEC geometry or database identifier.

A distinction that matters

A bell symbol does not establish sound level or alarm priority.

Full reference

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