Microchip MRF24J40MA-I/RM Zigbee Transceiver, 12-Pin

The MRF24J40MA is a 2.4GHz IEEE 802.15.4™ compliant, surface mount module with integrated crystal, internal voltage regulator, matching circuitry and PCB antenna. The module operates in the non-licensed 2.4GHz frequency ISM band.

IEEE 802.15.4™ compliant ZigBee® RF Transceiver
Supports ZigBee®, MiWi™, MiWi™ P2P and proprietary wireless networking protocols
Size: 0.7” x 1.1” (17.8 mm x 27.9 mm)
Integrated crystal, internal voltage regulator, matching circuitry and PCB antenna
Radio Regulation Certification for United States (FCC), Canada (IC) and Europe (ETSI)
Compatible with Microchip microcontroller families: PIC16F, PIC18F, PIC24F/H, dsPIC33 and PIC32
Operating voltage: 2.4 to 3.6V (3.3V typical)
Temperature range: -40°C to +85°C
Four-wire SPI interface
ISM Band 2.405 to 2.48GHz operation
Data rate: 250kbps
Up to 120m range

The on-board encryption is a great tool to help protect your privacy and data. AES-128 is a symmetric key encryption cypher and allows you to have a secure key to encrypt & decrypt your data. Symmetric ciphers are much more efficient for encrypting large amounts of data, easily.

You can find a range of software with the open-source code available at: http://www.microchip.com/wireless

WPAN (IEEE 802.15.4) - Microchip