TC66 Resource Inventory

This note captures what was directly observed from the archived TC66 resource bundle before any deeper reverse engineering.

Imported Artifacts

TC66.pdf
User Maual for Operation and PC software and APP of TC66(C) Type-c USB PD Trigger Meter 2019.6.5.pdf
TC66C_V1.1.6.apk
RuiDengUSBMeter_V1.0.0.6.rar (reviewed locally, not retained in git)

Factory technical support and conctact way .docx Reason: byte-for-byte duplicate of the contact document already imported from the UM24 archive

TC66.pdf is a shorter 9-page document with title metadata TC66/TC66C
the longer User Maual ... TC66(C) ... 2019.6.5.pdf appears intended to cover device operation plus PC and Android software usage
string scan of TC66C_V1.1.6.apk surfaced repeated TC66C identifiers and RuiDeng branding, which makes this artifact more model-specific than the generic UM-family APKs
quick archive listing of RuiDengUSBMeter_V1.0.0.6.rar shows a Windows desktop application, English and Chinese language files, x86/x64 drivers, and a bundled .NET Framework 4.6 installer

TC66 is USB-only
TC66C supports USB and Bluetooth
Android app support is TC66C-only and explicitly BLE-based
iPhone app support is TC66C-only
desktop software communicates over micro-USB, not Bluetooth
the manuals make PD / CC pull-down state an important part of correct measurement behavior

manuals may provide UI, feature, and workflow clues specific to TC66(C)
the Android APK is a good candidate for later string extraction or decompilation when we need model-specific labels and behavior hints
the PC software archive may still be useful for identifying USB/driver assumptions and desktop-side workflows, but it is intentionally left out of git for now
the payload working note TC66C Transport and Payload Working Note.md now records how the current app models TC66C transport and decoded fields