This is the first experiences I had with the RFXtrx433E USB 433.92MHz Transceiver. I upgraded a few days ago from Tellstick Duo, and I don't regret it.

After nearly a year running my home automation with Tellstick Duo I decided to upgrade to RFXCOM. I say upgrade because Tellstick has too few options apart from it's own simple interface where you can switch on/off and dim devices. I used Switch King and EventGhost (Windows), one of the few good programs that works with Tellstick. If you own a Tellstick and don't want to ditch it, I highly recommend the software mentioned.

It happened again and this time I was determined to find the solution. You can check my first post about this here.

Last night my wireless temperature sensors suddenly stopped working. Since all of them stopped at the same time, I thought it was the receiver connected to my server. Then I discovered that the Nexa remote switches didn't work either... They run on the same frequency as my temperature sensors. They worked if I held the remote very close to the receivers. That can only mean there is severe RF noise on 433MHz.

Creating a smart home takes more than just reading off some temperature sensors. My home should be able to switch/dim lights, heating, fans etc. based on environmental conditions. I should also be able to remotely control everything from a smart phone and a web page and react upon scenarios. As I have mentioned before, I don't want to buy a ready to use commercial system. I want to be able to add my own made devices to the system. I had a few criteria for selecting a system, listed below.