We have a Prodigy Advance system. I bought 3 extension boxes with 2 outlets and a second hand held which is a Prodigy Advance Squared. We connected the cable from the command station to the first box and from there to the second box and on to the third. If we take a handheld from one box and plug both into one it causes one of the handhelds to show “svda” and lose control. If you unplug this controller you will regain control but the other one looses it. This was the way the instructions said to connect these extension boxes. If I run from the command station direct to each extension box it works OK but there are only 3 places on the command station and we would like to have more outlets. Have I just got faulty extension boxes? Should I just try and find different outlets from an electronic store instead? Anyone else have similar problems?
Also one of the extension boxes will only work right on one outlet, if you plug into the other outlet everything shows up on the display but nothing happens.
Any help appreciated. Thanks in advance
Barry