I was an Indigogo backer of the Zen thermostat.

Minimalist, beautiful combined with the Smart things hub which is included in the package.

I had difficultly installing due to the wiring of the old thermostat. Zen support team send me the correct wiring for the old system and it works like a dream, easy to set up.

Works seamlessly with the iPhone, control and monitor any where in the house. Very pleased.

This review appeared on Amazon review page.