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| Part Number | WT21-A-HCI |
| Datasheet | WT21-A-HCI datasheet |
| Description | RF TXRX MOD BLUETOOTH CHIP ANT |
| Manufacturer | Silicon Labs |
| Series | - |
| Part Status | Obsolete |
| RF Family/Standard | Bluetooth |
| Protocol | Bluetooth v2.1 + EDR |
| Modulation | - |
| Frequency | 2.4GHz |
| Data Rate | 3Mbps |
| Power - Output | 6dBm |
| Sensitivity | -87dBm |
| Serial Interfaces | PIO, SDIO, SPI, UART |
| Antenna Type | Integrated, Chip |
| Utilized IC / Part | - |
| Memory Size | - |
| Voltage - Supply | 1.8V ~ 3.6V |
| Current - Receiving | - |
| Current - Transmitting | - |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C |
| Package / Case | Module |