Weird. I JUST downloaded and installed all the files from the new beta 2 (beta2 in tags – RFXtrx Gateway). Will try and update the J_RFXtrx.js, L_RFXtrx.lua and S_RFXtrx.xml from trunk – RFXtrx Gateway.
Yes, now it works!
It was obviously the files from the beta2@113 that did not work. When I updated (downgraded?) to the files in the 113 trunk it worked.
Just for clarity for others who want to do the same thing, when you have added the EMW100 device it will appear in Vera. With other 433 mHz devices you can usually learn them by putting the device in pairing mode and then sending a “on” or “off” command by just switching the device on or off in Vera.
With the EMW100 this do NOT work.
You need to put the switch in learning mode, choose the created device under “Managed devices” in the RFXtrx controller device, chiosse “Learn” under “Command” and press “Run”.
EMW100 support was not implemented in beta 2. I added it recently.
Excellent! I had 10-15 of these switches laying around, collecting dust. 
My EMW100 devices stopped working. When I press the switch it just stays on off. When I put he device in learn mode and send a new learn command nothing happens.
What protocol must be enabled in the plugin? The manual states “Lightning 5 EMW100” but that can’t be right?
I’m running the 1.0 version of the plugin.