Silicon Labs BLE121LR-A-M256K-V1 Bluetooth Chip 4
Silicon Labs BLE121LR-A-M256K-V1 Bluetooth Chip 4, Maximum Output Power: 8dBm, Receiver Sensitivity: -98dBm, Supported Bus Interfaces: GPIO, I2C, PWM, SPI, UART, Supported I/O Interfaces: GPIO, I2C, Serial, UART, USB, Dimensions: 13 x 14.7 x 1.8mm, Length: 13mm, Maximum Operating Temperature: +85 °C, Minimum Operating Temperature: -40 °C, Width: 14.7mm