Update: Stay away from this device for the time being......
My initial experience and background checks made me view the device through "rose tinted glasses"
Not so now!!!
At the moment, it is deemed a LEMON..... after a few days of superb signal around the home it has turned into a knightmare.....
Basically, if the unit goes into "standby" as it seems to do every few hours.... all signal is lost..... but then , when it decides to work again, it doesn't respnd until a manual reset is performed...
In the meantime, texts are buffered and not relayed and voicemails abound
For those interested, have a look
here
The idea is a sound one, but as a wise friend said to me "emergent technology has to be near perfect or the market will turn its back!" .... like as a t**d at a pool party..
Vito said it best "Caveat emptor" (let the buyer beware)