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|On/Off Temperature Threshold||On 35 deg F, Off 45 deg F|
I tried three different units in my greenhouse using a 600, 900, 1300 and 1500 watt heater. Each unit turned the heater on at about the appropriate temperature, but turned off shortly thereafter. If I had relied on this device I would have lost all of my plants. Beware, it does not work as specified.