{"schemaVersion":1,"slug":"ansi-combined-loudspeaker-and-microphone","name":"ANSI/IEEE Combined loudspeaker and microphone form","kind":"symbol","abbreviation":"HAN1B8","aliases":["HAN1B8","VAN1B8","IEEE Loudspeaker - Microphone","ANSI Combined loudspeaker and microphone"],"category":"installation-communications","drawingTypes":["Schematic"],"referenceFamilies":["IEEE / ANSI","Manufacturer"],"summary":"IEEE-library form of combined loudspeaker and microphone: this representation identifies an electroacoustic device serving loudspeaker and microphone roles.","description":["This reference locates combined loudspeaker and microphone in Autodesk's IEEE-oriented annunciations family. This representation identifies an electroacoustic device serving loudspeaker and microphone roles. The public library uses HAN1B8 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.","Use the surrounding circuit labels and the project legend to identify the intended operating condition and connection. Carry the same device reference into the schedule or equipment document so the symbol can be reconciled with its real terminals, function and operating limits.","Show transmit/receive connections and the documented operating modes. Two acoustic roles do not imply simultaneous two-way operation. Show transmit/receive connections and the documented operating modes. Two acoustic roles do not imply simultaneous two-way operation. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted."],"readingNotes":["Show transmit/receive connections and the documented operating modes.","Two acoustic roles do not imply simultaneous two-way operation."],"drawingChecklist":["Identify the associated device, circuit or diagram boundary.","Show transmit/receive connections and the documented operating modes.","Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form."],"distinction":"Two acoustic roles do not imply simultaneous two-way operation.","facts":[{"label":"Convention evidence","value":"Autodesk IEEE Symbol Preview: Annunciations; published form: Loudspeaker - Microphone."},{"label":"Public vendor block","value":"HAN1B8. Vendor library token, not an IEEE symbol number."},{"label":"Information added","value":"Show transmit/receive connections and the documented operating modes."},{"label":"Preview","value":"Independent educational concept; consult the publisher and applicable standard for the exact graphic"},{"label":"Artwork scope","value":"Original educational geometry. Exact standard graphics, product ratings and terminal pinouts are not certified."}],"references":[{"sourceId":"s28-ieee-annunciations","relevance":"Public IEEE-oriented Annunciations table explicitly lists HAN1B8 as Loudspeaker - Microphone. This supports the vendor convention context, not reproduction of the publisher graphic."}],"related":["iec-combined-loudspeaker-and-microphone","power-converter","generic-electrical-load"],"artwork":"s28-ansi-combined-loudspeaker-and-microphone","publishedOn":"2026-10-28","updatedOn":"2026-10-28","provenance":"independent-public-research","symbolVariant":{"convention":"IEEE / ANSI","form":"Loudspeaker - Microphone","reference":"Autodesk IEEE Symbol Preview: Annunciations, block HAN1B8. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.","counterpart":"iec-combined-loudspeaker-and-microphone"},"plainEnglish":{"title":"What does ANSI/IEEE Combined loudspeaker and microphone form mean?","introduction":"This reference locates combined loudspeaker and microphone in Autodesk's IEEE-oriented annunciations family. This representation identifies an electroacoustic device serving loudspeaker and microphone roles. The public library uses HAN1B8 for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.","example":"Use the surrounding circuit labels and the project legend to identify the intended operating condition and connection. Carry the same device reference into the schedule or equipment document so the symbol can be reconciled with its real terminals, function and operating limits.","drawings":"Show transmit/receive connections and the documented operating modes. Two acoustic roles do not imply simultaneous two-way operation. Show transmit/receive connections and the documented operating modes. Two acoustic roles do not imply simultaneous two-way operation. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.","terms":[{"name":"Terminal","meaning":"An identified point where a conductor connects."},{"name":"Rating","meaning":"A value stating the conditions for which equipment is specified."},{"name":"Schematic","meaning":"A drawing showing function and connections rather than physical appearance."}],"diagram":"flow","steps":["Identify the device and form","Read the connections and state","Check the equipment reference"],"caption":"A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.","sources":[{"label":"Autodesk IEEE Symbol Preview: Annunciations","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-157265BC-DB2C-4AFE-B9E9-88A5F748BFF9.htm"}],"detail":"IEEE-library form of combined loudspeaker and microphone: this representation identifies an electroacoustic device serving loudspeaker and microphone roles. Two acoustic roles do not imply simultaneous two-way operation.","profileId":"reviewed-symbol-20261028"},"url":"https://eloragrid.ai/symbols/ansi-combined-loudspeaker-and-microphone","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/ansi-combined-loudspeaker-and-microphone.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"s28-ieee-annunciations","title":"Autodesk IEEE Symbol Preview: Annunciations","publisher":"Autodesk","url":"https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-157265BC-DB2C-4AFE-B9E9-88A5F748BFF9.htm","type":"cad-reference","scope":"Public annunciations family names and vendor block tokens. Horizontal, vertical and rotated placements are not separate engineering functions. Exact standard geometry is not reproduced.","checkedOn":"2026-10-28","reuse":"link-only","relevance":"Public IEEE-oriented Annunciations table explicitly lists HAN1B8 as Loudspeaker - Microphone. This supports the vendor convention context, not reproduction of the publisher graphic."}]}