Answer:
The Sewa K-500 Plus wrist receiver is classified under HSN code 85311090 for commercial taxation and GST invoicing.
The Sewa K-500 Plus wireless wrist receiver (SKU: KTI04012001SWW) is supplied under Indian Customs Tariff / Harmonized System of Nomenclature (HSN) code 85311090, which covers electric sound or visual signalling apparatus (including indicator panels, bells, and calling alert systems).
KT Automation issues standard B2B tax invoices reflecting HSN 85311090 to enable commercial buyers and institutional clients to accurately account for GST and claim applicable Input Tax Credit (ITC).