Postage is the only unknown at the moment, and it is likely to be different for everyone to cover different parts of the country, and for those getting 1, 2 or 3 devices, which may all end up costing the same as posting one.
I can't think of any way to sert this out in advance, but by the same token, I don't want to have to go and hand over a couple of grand for the gear, and end up sitting on 10 controllers from anybody who changes their mind.
Any brainwaves???
As for the "two stage" system, are you referring to having two probes, or just two setpoints with different outputs? I used a slightly more upmarket model in a control system which had a normal setpoint, and an alarm setpoint, which I had organised to run a heating system on cheap power overnight, but, then with the option to still run during the day if the temp got too cold. Not familiar with a two probe system, but if you can get a model number from one of the dixell links, I can always ask.
dreamboat