SpecificationsTX Peak Current: 40 mA RX Current: 40 mA (@3.3 V) Power-down Current: < 1 μA Indoor/Urban: up to 133 ft (40 m) Outdoor line-of-sight: up to 400 ft (120 m) Etc.
XBee modules are embedded solutions providing wireless end-point connectivity to devices. These modules use the IEEE 802.15.4 networking protocol for fast point-to-multipoint or peer-to-peer networking. They are designed for high-throughput applications requiring low latency and predictable communication timing.“ So basically XBee is Digi’s own Zigbee based protocol.