Parts - nRF24L01 2Ghz wireless data module

• 2.4-2.5GHz worldwide ISM band
• 1.9 - 3.6V input voltage
• 125 channel spread-spectrum
• upto 2Mbps on-air transmission rate
• 15x29mm (including antenna)
• SPI interface (5V tolerant)
•  datasheet.pdf