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| PartNumber | BGM121N256V1 | BGM121N256V1R | BGM121N256V2 |
| Description | Bluetooth Modules (802.15.1) | Bluetooth Modules (802.15.1) | MODULE BT SIP MODULE WITHOUT ANT |
| Manufacturer | Silicon Laboratories | Silicon Laboratories | - |
| Product Category | Bluetooth Modules (802.15.1) | Bluetooth Modules (802.15.1) | - |
| RoHS | Y | Y | - |
| Class | Bluetooth Low Energy (BLE) | Bluetooth Low Energy (BLE) | - |
| Protocol | Bluetooth 4.2 | Bluetooth 4.2 | - |
| Data Rate | 1 Mb/s | 1 Mb/s | - |
| Operating Supply Voltage | 1.85 V to 3.8 V | 1.85 V to 3.8 V | - |
| Output Power | 8 dBm | 8 dBm | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Sensitivity | - 90 dBm | - 90 dBm | - |
| Modulation Technique | GFSK | GFSK | - |
| Interface Type | GPIO, I2C, SPI, UART, USART | GPIO, I2C, SPI, UART, USART | - |
| Series | BGM121 | BGM121 | - |
| Dimensions | 6.5 mm x 6.5 mm x 1.4 mm | 6.5 mm x 6.5 mm x 1.4 mm | - |
| Features | Integrated DC-DC Converter, Onboard Bluetooth Stack | Integrated DC-DC Converter, Onboard Bluetooth Stack | - |
| Frequency | 2.4 GHz | 2.4 GHz | - |
| Frequency Range | 2.4 GHz to 2.4835 GHz | 2.4 GHz to 2.4835 GHz | - |
| Height | 1.4 mm | 1.4 mm | - |
| Length | 6.5 mm | 6.5 mm | - |
| Memory Size | 256 kB | 256 kB | - |
| Range | 200 m | 200 m | - |
| Shielding | Shielded | Shielded | - |
| Type | USB Adapter | USB Adapter | - |
| Width | 6.5 mm | 6.5 mm | - |
| Brand | Silicon Labs | Silicon Labs | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Antenna Connector Type | RF Pin | RF Pin | - |
| Core | ARM Cortex-M4 | ARM Cortex-M4 | - |
| Product Type | Bluetooth Modules | Bluetooth Modules | - |
| Subcategory | Wireless & RF Modules | Wireless & RF Modules | - |
| Supply Current Receiving | 8.7 mA | 8.7 mA | - |
| Supply Current Transmitting | 8.2 mA | 8.2 mA | - |
| Version | Bluetooth 4.2 | Bluetooth 4.2 | - |
| Unit Weight | 0.007055 oz | - | - |
| Packaging | - | Reel | - |
| Factory Pack Quantity | - | 1000 | - |