# Trezor device naming in codebase

Development/Internal name consists of 4 keys <product_class> <platform> <feature_class> <generation>

  • product_class - 'T' for Trezor hardware wallet
  • platform - '1' for STM32F207, '2' for STM32F42x
  • feature_class - 'B' for Buttons, 'T' for Touch
  • generation
Official nameDevelopment name
Trezor Model 1T1B1
Trezor Model TT2T1
Trezor Safe 3T2B1, T3B1
Trezor Safe 5T3T1
  • Trezor Safe 3 exists in two variants, depending on its chip. It was upgraded post-release.