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NRF51822 M1 Bluetooth Module BLE4.0/4.1 100 meters Communication distance 256KB flash+16KB RAM
The latest third version of the chip, nRF51822-QFAA-R3, you can use the latest Softdevice and SDK 9.0.
The nRF51822 BLE M1 module, using the 1.27 standard pin hole with half hole, inserting the bread board leads to 20 GPIO ports, 6 ADC ports, German designer antenna, through the impedance matching test, signal stability,100 meters long communication distance, military quality.
Note :
this board comes without procedures, pure hardware module, you need to develop internal procedures for burning, we do not provide the protocol stack and procedures.
2 * NRF51822 M1 Bluetooth Module