RFXCom
======
* hardware:  RFXtrx433E
  * The preferred firmware for the RFXtrx433E is Ext or Ext2.
* ext1 versus ext2
  * see 2.2.2 in http://www.rfxcom.com/WebRoot/StoreNL2/Shops/78165469/MediaGallery/Downloads/RFXtrx_User_Guide.pdf
  * we are using ext1,
* activated protocols:
  * RSL/Revolt
  * Oregon Scientific
  * Lighting4 (brennenstuhl receive)
* unclear if we need this (enabled by default):
  * AC
  * ARC
  * X10

Brennenstuhl
============
* learn with lighting5 in rfxcom-mgr
  * type: Kangtai, Cotech
  * send "Command on"
  * we have used the remote for learning (and picked the ID from ligting4 logs)
* learn button at bottom of device
* 3 seconds for learn, 6 seconds for reset
* 3 devices
  * ID: AD 4A (probably the factory passwd for the included remote)
* UNIT 1 (remote A) and 2 (remote B) are indoor
* UNIT 4 (remote D) is the outdoor one
* registered in domoticz via switch/learn