What a great idea. Works as advertised.

This little thermostat is superb. It completes the circuit when it’s 78 degrees, cuts off when it drops below 75. No bells, no whistles, but it does exactly what it’s designed to do.

Electronics can be glitchy in the humid environment of a greenhouse. This ThermoCube is not. No dials to adjust, no schedules to program, no moving parts that can break. It does exactly what it says it will do. It turns on my fan when the temp gets up to 78 degrees and shuts it off when the temp drops to 70 degrees. Every time. No more wilted plants from temp spikes up to 110.