After some googling I have found the following.
http://www.ebay.co.uk/itm/220V-Bluetoot ... 1389692691
http://www.ebay.com/itm/DC-5V-12V-2-Cha ... 1938681040
I have tried writing these to the serial port and still haven't had any luck
I found similar boards on ebay using the same STC15F104w chip. They all had modbus so maybe that's what they're using to turn it off and on. good news is that modbus can be replayed so we just need that replay. I've emailed the manufacturer so maybe they will be helpful and supply us with this or i'll just buy another and sniff the bus...