| PartNumber | WT11U-E-AI55 | WT11U-E-AI55C | WT11U-E-AI56 |
| Description | Bluetooth Modules (802.15.1) AI55 : iWRAP5.5. Bluetooth 2.1+EDR module with antenna connector. Class 1, iWRAP 5.0, 17 dBm TX power. FP Q4/16. IP Q3/16 | Bluetooth Modules (802.15.1) AI55 : iWRAP5.5. Bluetooth 2.1+EDR module with antenna connector. Class 1, iWRAP 5.0, 17 dBm TX power. FP Q4/16. IP Q3/16 | AI5 : IWRAP 5.0. BLUETOOTH 2.1+E |
| Manufacturer | Silicon Laboratories | Silicon Laboratories | - |
| Product Category | Bluetooth Modules (802.15.1) | Bluetooth Modules (802.15.1) | - |
| Class | Class 1 | Class 1 | - |
| Protocol | Bluetooth 2.1 + EDR | Bluetooth 2.1 + EDR | - |
| Data Rate | 3 Mb/s | 3 Mb/s | - |
| Operating Supply Voltage | 2.7 V to 3.6 V | 2.7 V to 3.6 V | - |
| Output Power | 17 dBm | 16.5 dBm | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Sensitivity | - 84 dBm | - 84 dBm | - |
| Interface Type | Serial | SPI, UART | - |
| Series | WT11u | WT11u | - |
| Antenna | U.FL | - | - |
| Dimensions | 35.75 mm x 14.5 mm x 2.6 mm | 35.75 mm x 14.5 mm x 2.6 mm | - |
| Height | 2.6 mm | 2.6 mm | - |
| Length | 35.75 mm | 35.75 mm | - |
| Range | 350 m | 350 m | - |
| Type | USB Adapter | USB Adapter | - |
| Width | 14.5 mm | 14.5 mm | - |
| Brand | Silicon Labs | Silicon Labs | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Product Type | Bluetooth Modules | Bluetooth Modules | - |
| Factory Pack Quantity | 500 | 100 | - |
| Subcategory | Wireless & RF Modules | Wireless & RF Modules | - |
| Supply Current Receiving | 36 mA | 43 mA | - |
| Supply Current Transmitting | 138 mA | 176 mA | - |
| Version | Bluetooth 2.1 + EDR | - | - |
| Modulation Technique | - | BDR | - |
| Features | - | 802.11 Co-Existence Interface, 6 Software Programmable IO Pins | - |
| Shielding | - | Shielded | - |
| Antenna Connector Type | - | U.FL | - |