NRF51822 Low Power Bluetooth 4.0 BLE ARM 2.4 GHz System

The nRF51822 is a multi-protocol, single-chip solution for ultra-low power wireless applications (ULP wirelesss applications).
It integrates Nordic's state-of-the-art wireless transmitters while supporting Bluetooth(R) low energy and a dedicated 2.4GHz protocol stack.
The basic situation is:
2.4GHZ Multi-protocol Wireless RF
32-bit ARM Cortex M0 processor
128-bit AES hardware encryption processor
256kB flash / 32kB RAM
Programmable peripheral interface PPI
Full-featured digital interface: SPI / I2C / UART
10-bit ADC
Programmable output power: +4dBm to -20dBm
Application development and protocol stack completely independent
Fully compatible with NRF24L series
Compatible with NRF51xxx series pins
Global Independent Power Management
Operating voltage range (1.8 V ~ 3.6 V)

【My parameters】
Master chip: nRF51822
Communication distance: 30m (condition: open area / 1M rate)
Working frequency band: 2.4GHz
Operating voltage: 2.0V ~ 3.6V
Temperature range: -40°C ~ 85°C
Size: 24.5mm x 32.26mm (PCB)
Interface: all I/O interfaces except P0.26 and P0.27
Needle spacing: 2.00mm
Needle spacing on both sides: 18.00mm
Antenna: Onboard Antenna