Marlec Solar iBoost Plus Immersion Controller £312 + vat
Very positive easy to install and so far is working well providing hot water From my panel without any help
Great piece of equipment, does exactly as it says and easy to install and set up.
What a brilliant bit of gear. Only had it few days but already we're getting plenty of free hot water.
used many times, good bit of kit
Very responsive arrived in two days However, difficulty in getting the unit fitted by qualified person