Based on the MRF24J40 chip, this module gives you everything you need to start immediate work on developing IEEE 802.15.4 (WPAN). WPAN makes it very easy to communicate, providing addressing, automatic retry and most importantly, collision detection and avoidance. The result is a very robust, high speed data connection. It's a great platform to start experimenting with mesh networks as well - in fact, this module can be used as the PHY/MAC layers of a full Zigbee stack if you wish.