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| Part Number | WT21-A-HCI | WT11-A-HCI |
|---|---|---|
| Manufacturer | Silicon Labs | Murata Electronics |
| Product Status | Obsolete | Obsolete |
| RF Family/Standard | Bluetooth | Bluetooth |
| Protocol | Bluetooth v2.1 +EDR | Bluetooth v2.0 +EDR, Class 1 |
| Modulation | - | DQPSK, GFSK |
| Frequency | 2.4GHz | 2.4GHz |
| Data Rate | 3Mbps | 2Mbps |
| Power - Output | 6dBm | 18dBm |
| Sensitivity | -87dBm | -82dBm |
| Serial Interfaces | PIO, SDIO, SPI, UART | SPI, UART, USB |
| Antenna Type | Integrated, Chip | Integrated, Chip |
| Utilized IC / Part | - | EM351 |
| Memory Size | - | 8MB Flash |
| Voltage - Supply | 1.8V ~ 3.6V | 3.1V ~ 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 |
