- WT32-A-AI
- Silicon Labs
- Bluetooth Class II 2.1781Mbps 50-Pin SMD T/R
- WT32-A-AI3
- Bluegiga Technologies
- Bluetooth / 802.15.1 Modules WT32 Audio Mod w/ Chip Ant iWRAP 3.0
- WT32-A-AI4
- Silicon Labs
- Bluetooth v2.1 + EDR SMART SOC Class II 2.1781Mbps 50-Pin SMD T/R
- WT32-A-AI4C
- Silicon Labs
- Bluetooth 2.1 + EDR module
- WT32-A-AI5
- Bluegiga Technologies
- Bluetooth / 802.15.1 Modules WT32 Audio Mod w/ Chip Ant iWRAP 5.0