These are new receivers from RFX Comm. The RFX is the USB version and the RFXe is the same but with an ethernet interface for connecting to XTension. The RFXt is a RF transmitter module that can exist along in the USB version, or with one RF receiver in the ethernet version.
The combination of available pieces and parts of the RFX receivers can be a bit daunting. XTension supports the “single com port” version of the ethernet and usb device with either or both the 310mhz and 433mhz receivers. While it is possible to add a receiver later it's simpler to order the whole thing at once.
Basic support for X10 wireless and security devices is included in XTension at no extra charge. To receive Oregon Scientific and other “exotic” devices requires the RFX plugin from sentman.com
The USB version contains a USB/Serial chip that requires a driver. The Macintosh driver can be downloaded directly from here: FTDI Chip Driver Once that is installed and the device plugged in a new serial port will be available on your Mac. When setting up the new device in the XTension preferences window simply select the serial port from the popup menu. That menu is built when you open the window, so if you plug in the device after you open the window you may need to close and open it again for it to be displayed.
The ethernet version requires a bit more setup before it's ready to use. When you first connect it to the network and power it up it will ask for an address from your local networks DHCP server. You will need to consult the DHCP server logs or configuration screen to find what address it was given in order to connect to it. After you know the IP you can telnet to the box to set it's networking configuration, I recommend you give the box a static IP address so XTension will always be able to find it and reconnect to it. It is also vital that you properly configure the internal baud rate between the ethernet adaptor and the receiver modules. Details on doing this are in section 4 of the Ethernet Interface Docs
That link is broken at the moment so I will flesh them out here:
telnet (the IP address from DHCP) 9999
As of this edit, the XTension supports both X10 transmission in both the US and EU frequencies. ( but the unit you buy is specific to the locale). The RFX transmitter is also capable of sending RF commands to the HomeEasy and KlikAanKlikUit product range. But you can control a lot more using XTension so this text can be extended with RF modules used in other European countries. All these products use the same technology (same Taiwan factory . The European 433.92MHz RFX transmitter is also capable of sending RF commands to the HomeEasy, DomiaLite, Chacon, NEXA, Intertechno, Düwi and KlikAanKlikUit product ranges and to the (Dutch) Harrison electrical curtains.
Chacon is used in Belgium and France, NEXA is used in the Northern European countries (Sweden, Norway, Denmark,Finland) Intertechno is used in Austria (and probably Switzerland and Germany) Düwi is used in Germany (and probably Switzerland and Austria) HomeEasy and DomiaLite is used in the UK KlikAanKlikUit is used in The Netherlands Harrison curtains are controlled using X10 commands with the Harrison protocol enabled in the RFXCOM transmitter. On=Close, Off=Open.
* Being an international company the Ethernet version I received shipped with a UK power adaptor. Not having a 5v adaptor handy I plugged in a 6v one. Turns out that the device is very sensitive to it's voltage supply and while it did not damage the device to give it slightly more voltage than I was supposed to it could not actually receive anything in that state. Make sure to use a regulated 5v power supply.
* Failing to set the baud rate correctly on the ethernet version as per the instructions will still allow packets to be received, but they will all be gobbledegook. If nothing but errors are received check the baud rate settings via the telnet interface.
* If you've done all that and it still doesn't get any recognizable packets then it's possible that the device is stuck in X10 emulation mode. The default mode is to send packets that look like the other X10 receivers. XTension supports the “variable length mode” packet that can contain more than just X10 wireless signals like the emulation mode. Though XTension attempts to set this at startup it can help to set it manually once. From the command line in XTension enter the script:
send data "F02C" interface "the name of your RFX interface from preferences"
and that will resend the command to the device to fix it into variable length packet mode.
* If you're suffering poor reception open the box and check that the ground connection to the antenna coax connector has not come loose in shipping. I've had report of at least one instance where this has happened. Easily fixed if that is the problem.