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| Part Number | WT12-A-AI5IAP | WT12-A-HCI21001 | WT12-A-AI5 | WT12-A-AI4 | WT12-A-AI55 |
| Manufacturer | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs | Silicon Labs |
| Series | WT | * | - | - | * |
| Package/Case | Module | Module | Module | Module | Module |
| Packaging | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Programmable | Not Verified | Not Verified | Not Verified | Not Verified | Not Verified |
| RF Family/Standard | Bluetooth | - | Bluetooth | Bluetooth | - |
| Protocol | Bluetooth v2.1 +EDR, Class 2 | - | Bluetooth v2.1 +EDR, Class 2 | Bluetooth v2.1 +EDR, Class 2 | - |
| Modulation | DQPSK, GFSK | - | DQPSK, GFSK | DQPSK, GFSK | - |
| Frequency | 2.4GHz | - | 2.4GHz | 2.4GHz | - |
| Data Rate | 3Mbps | - | 3Mbps | 3Mbps | - |
| Power - Output | 3dBm | - | 3dBm | 3dBm | - |
| Sensitivity | -86dBm | - | -86dBm | -86dBm | - |
| Serial Interfaces | PIO, SPI, UART, USB | - | PIO, SPI, UART, USB | PIO, SPI, UART, USB | - |
| Antenna Type | Integrated, Chip | - | Integrated, Chip | Integrated, Chip | - |
| Utilized IC / Part | BlueCore4 | BlueCore4 | BlueCore4 | BlueCore4 | BlueCore4 |
| Memory Size | 8MB Flash | - | 8MB Flash | 8MB Flash | - |
| Voltage - Supply | 3.1V ~ 3.6V | - | 3.1V ~ 3.6V | 3.1V ~ 3.6V | - |
| Current - Receiving | 70mA | - | 70mA | 70mA | - |
| Current - Transmitting | 70mA | - | 70mA | 70mA | - |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C | - | -40°C ~ 85°C | -40°C ~ 85°C | - |
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