| PCB and critical components | Schematic or controlled interface, PCB revision, chipset, memory, sensors, connectors, display, and approved alternates | Does the build deliver the approved function, compatibility, performance, and traceability? | Board revision, component source, part number, layout, clock, memory, or interface change |
| Battery and power | Cell and pack identity, protection, capacity, charger or adapter, connector, cable, power profile, and supplier evidence | Do charging, heat, endurance, protection, transport, and intended-use conditions match the product? | Cell, pack, protection circuit, adapter, cable, charging protocol, enclosure, or power-rating change |
| Radio and connectivity | Module, antenna, bands, power, firmware settings, protocols, app or cloud dependency, and market configuration | Does the exact radio configuration match functional and destination evidence? | Module, antenna, frequency, output, radio firmware, enclosure, layout, or simultaneous-transmission change |
| Firmware and software | Version, release notes, language, defaults, update method, reset, data behavior, security owner, and known issues | Can the approved version be reproduced, tested, recovered, supported, and connected to hardware? | Bootloader, application, driver, library, radio parameters, app, server, permissions, or data-flow change |
| Mechanical and thermal | CAD revision, materials, dimensions, seals, fasteners, vents, heat path, finish, tooling, and assembly method | Does the enclosure protect the product without creating heat, fit, durability, or radio problems? | Plastic, metal, coating, gasket, vent, adhesive, tooling, internal layout, or assembly change |
| Accessories and pack | Included cables, adapters, batteries, mounts, consumables, retail pack, labels, barcode, warnings, and manual | Does every shipped component match the listing, market, technical evidence, and inspection plan? | Accessory supplier, rating, connector, material, label, manual, pack, or included-item change |
| Test and inspection | Functional, safety, performance, reliability, production-test, calibration, sampling, and failure criteria | Do tests cover customer-facing claims and critical failure modes on the approved build? | Requirement, component, process, firmware, tooling, test method, limit, or market change |
| Technical and market evidence | Applicant, manufacturer, model, variants, reports, declarations, labels, responsible parties, and technical file | Does each record cover the exact configuration and destination where the product will be sold? | Model, legal role, hardware, radio, power, battery, firmware, claim, label, or applicable-rule change |