Answer:
The SOLT SP7-100 (KT ref: KTI04012001SLTW) is categorized under HSN code 85311090, applicable to electrical sound or visual signalling apparatus.
For commercial procurement, billing, and GST compliance in India, the SOLT SP7-100 wrist-watch mobile receiver (KT Automation reference KTI04012001SLTW) is classified under HSN code 85311090.
This Harmonized System of Nomenclature code covers electrical sound or visual signalling apparatus, including paging units and call alert receivers. B2B tax invoices generated by KT Automation specify this HSN classification along with the applicable Goods and Services Tax (GST) rate for corporate tax credit processing.