I am Riccardo from Italy,
I am new here, in the forum and in the world of home automation!
I've installed domoticz on my iMac, then I assembled an rflink:
bought a Saintsmart copy of arduino and a rflink module, on nodo-shop.nl
the rflink mounts the aurel transceiver, and because I am not so good with the solder, I bought also the soldering service: my assembly work has been just to link the arduino to the rflink module: easy
domoticz sees and talks with the rflink fine
BUT I have a problem:
I have a remote command for some plug switches, branded Avidsen(103100). When I press the remote buttons, they are recognised (by domoticz) as Light switch ELRO AB400.
The problem is that when domoticz sends the signal to switch , it doesn't work: domoticz logs say "sent", the rx tx lights on arduino flashes, but the switch doesn't change.
I have used a radio receiver (sdr usb module + gqrx app) to see the signals, the one coming from rflink is poor, weak and dirty.
I have another remote command switch kit, branded SIlvercrest (Lidl distribution) and recognised as LightSwitch Unitec, and the behaviour is just the same.
where could be the problem? did I miss something ? 
the arduino is powered by the iMac , the antenna I am using I took from a dismissed wifi hotspot so may be it isn't perfect for 433mhz:
low power? bad antenna? ... ??
thanks, RIc