RFLink

RFLink is a gateway for receiving radio messages from Home Automation devices (motion detectors, smoke detectors, door opening, temperature and humidity sensor …) and mimic messages for trigger commands (opening / closing flap, turn on / off a lamp …). RFLink is an Open Source project that supports virtually all existing frequencies: 315MHz, 433MHz, 868MHz, 915MHz and 2.4GHz recently. It is a clone of the RFXCOM commercial gateway that can be manufactured or even a little less than 20 € (without antenna or housing).