Digi International’s XBee S1 802.15.4 RF modules enable robust end-point connectivity with ease. Whether deployed as a pure cable replacement for simple serial communication, or as part of a more complex hub-and-spoke network of sensors, these modules maximize performance and ease of development. The XBee S1 802.15.4 modules seamlessly interface with compatible gateways, device adapters, and range extenders providing developers with true beyond-the-horizon connectivity. These RF modules come in two power levels and ranges, a 100 foot line of sight range for the standard module and a 1 mile line of sight range for the Pro version. The transmit current is 45 mA @ 3.3 V_DC for the standard module and 215 mA @ 3.3 V_DC for the Pro version. Digi XBee modules provide OEMs with a common footprint shared by multiple platforms, including multipoint and ZigBee®/Mesh topologies, and both 2.4 GHz and 900 MHz solutions. Digi XBee S1 802.15.4 RF modules are ideal for applications requiring low latency and predictable communication timing providing quick, robust communication in point-to-point, peer-to-peer, and multipoint/star configurations.