| Part Number | WT11-A-HCI | WT21-A-HCI |
|---|---|---|
| Manufacturer | Murata Electronics | Silicon Labs |
| Category | RF Transceiver Modules and Modems | RF Transceiver Modules and Modems |
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| Product Status | Obsolete | Obsolete |
| RF Family/Standard | Bluetooth | Bluetooth |
| Protocol | Bluetooth v2.0 +EDR, Class 1 | Bluetooth v2.1 +EDR |
| Modulation | DQPSK, GFSK | - |
| Frequency | 2.4GHz | 2.4GHz |
| Data Rate | 2Mbps | 3Mbps |
| Power - Output | 18dBm | 6dBm |
| Sensitivity | -82dBm | -87dBm |
| Serial Interfaces | SPI, UART, USB | PIO, SDIO, SPI, UART |
| Antenna Type | Integrated, Chip | Integrated, Chip |
| Utilized IC / Part | EM351 | - |
| Memory Size | 8MB Flash | - |
| Voltage - Supply | 3.1V ~ 3.6V | 1.8V ~ 3.6V |
| Current - Receiving | 170mA (Max) | - |
| Current - Transmitting | 170mA (Max) | - |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Package / Case | Module | Module |