trezor-suite/docs/misc/device-naming.md

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 name	Development name
Trezor Model 1	T1B1
Trezor Model T	T2T1
Trezor Safe 3	T2B1, T3B1
Trezor Safe 5	T3T1
Trezor Safe 7	T3W1

• Trezor Safe 3 exists in two variants, depending on its chip. It was upgraded post-release.