Any interference issues with RFXtrx433E and DSC alarm?

Plugins & Plugin Development USB RFXtrx Transceiver
1

Hello,

I have a Vera Lite and a DSC alarm with various wireless door/window/motion/fire sensors. These sensors communicate back to the alarm via a wireless transceiver that runs on the 433mhz frequency. Everything with that is working great. I’m very interested in getting a RFXtrx433E but I’m a-little concerned about the fact it operates on the same 433mhz frequency. The last thing I want is for my DSC alarm sensors to not work because of interference issues. Does anyone have a RFXtrx433 and a DSC alarm working together without issues?

Also…

Does anyone know of a good vendor who sells the RFXtrx433E in the USA? I haven’t been able to find the newer “E” version in North America.

Thanks in advance,
John

2

Well every protocol handled by the RFXTRX is on the 433mhz frequency anyway…
You might want to check this document, page 10 : http://www.rfxcom.com/Documents/RFXtrx%20User%20Guide.pdf
It tells about sensitivity affected by the number of active protocols at the same time.

The “E” model is rather new, it might take some time to get to the US, I don’t know where RFXCOM is from.

3

There has been two frequencies variants supporting 315 and 433 MHz.
I both the DSC and the 433 rfxtrx and have never experienced any interference. Both the receivers are within a couple of meters of each other.

4

Thanks for the responses guys, much appreciated.

hyzteric, yep I actually did see that chart in the manual. But unless I missed it, it only lists protocols supported by the RFXtrx433, not any 3rd party devices/protocols. But, it sounds like Brientiem has a DSC alarm with wireless sensors working in conjunction with the RFXtrx433 which is a good sign.

Anyone else have success with wireless DSC alarm sensors and the RFXtrx433 working together without interference?

I’m not opposed to ordering the “E” version from Europe provided it will work OK in the US. I heard the frequency used for the X10 protocols are different for US and Europe (which I don’t care about) but I’m not sure about the other protocols.

5

The RFXtrx433 is for Europe, Australia and other country x10 433 MHz, they later created the the 315 MHz for the US X10 market. Of course there was a wider use for 433 MHz other than x10. I have both co-existing for about 2 years. The DSC receiver and the RFXtrx433 and within two metres/yards.

6

Thanks Brientim that makes sense. :slight_smile: My main interest in the RFXtrx433 is to use the cheap Oregon Scientific weather sensors but I might venture into using some of the motorized blinds in the future.

7

I have the the Oregon Scientific sensors and they are hit/miss on accuracy. Some up to 5 C difference when next to each other and not mechanism to calibrate. Cheap yes, accurate no…

8

Yea I’ve had accuracy problems with the z-wave weather sensors too, both the Aeon and the Everspring, especially the humidity readings. I got around it by creating my own virtual temperature and humidity devices with some scheduled lua code. I can “calibrate” the real sensors in the Vera by reading their values, applying an offset, and setting that value on my virtual devices. Then I just add the virtual devices to the dashboard instead of the real devices. Seems to work pretty well, figured I may have to do it for the Oregon Scientific devices too. :slight_smile: