The XBee Pro RF Modules were engineered to meet IEEE 802.15.4 standards and support the unique needs of low-cost, low-power wireless sensor networks. The modules require minimal power and provide reliable delivery of data between devices. Compared with XBee, the Pro version is longer range, but higher power. Features Regions: US, AU Frequency: 2.4GHz Positioning: Extended-range multipoint RF Line of Sight Range: 1 mile / 1.6 km Transmit Power: +18dBm Receiver Sensitivity (1% PER): -100dBm Form Factor: Through-hole RF Data Rate: 250kbps Hardware Series: S1 Datasheet