The XRF Wireless RF Radio UART is an extremely popular easy to use RF serial data module with great range and XBee style pin layout. The XRF has now had over an equivalent of 40 million hours of run time in the field, quite stagering for something so affordable. It provides an out-of-the-box wireless RF serial connection without any need for programming or end-user configuration.
The module operates in the ISM bands (868 to 915 MHz) which means it has a greater range than Bluetooth, WiFi or Zigbee style 2.4 GHz units that sport the same footprint. This also means it goes through more walls and reaches further. There have been reports of customers sending data over more than 3km using the standard supplied whip antennas out side. You should expect 500m + on the standard antenna.
Each module comes pre-loaded with firmware which enables the XRF to work with all other Ciseco RF modules, without any programming or configuration. You provide data on one end and it appears on the other. All data packetisation, data checking, etc. is all done for you. The module makes use of Texas Instruments’ CC1110, a low-power System-on-Chip, which sports a micro-controller unit (MCU), memory, a sub-1GHz transceiver, and an encryption engine.
Ciseco provide a series personalities that can be used to specialise an XRF so it can become a dedicated sensor or actuator that communicates using Ciseco’s LLAP; a protocol that is as easy to understand as a text message or sending a tweet. There are a range of sensors, actuators, support boards, Arduino shields, and Raspberry Pi add-on boards that when fitted with an XRF become wireless nodes in a Ciseco powered Internet of Things.
The XRF is not recommended or authorised for use in life support, surgical implantation, nuclear or aircraft applications or for any use or application in which the failure of a single component could cause substantial harm to persons or property.
Dimensions: 29mm x 25mm x 9mm (with antenna attached)
Detailed electrical and environmental specifications similar to those for the SRF can be found here : http://openmicros.org/index.php/articles/88-ciseco-product-documentation/259-srf-technical-data.
Compare radio modules for range & features - radio comparision chart.pdf
XRF documents including technical data, tutorials, downloads and projects - http://openmicros.org/index.php/articles/247-xrf-document-index