
Before purchasing this product I had to use a thermometer and if it works it means it's time to turn off the heaters for our seedlings. We have 2 heaters that are 4ft long and I wanted something to turn on and off automatically when the right temperature is reached. The instructions are so bad I had to upload them to Youtube but they struggled to set the desired temperature to turn on. So I figured all you have to do is press the install button for 3 seconds and it will go to TS. Set the desired temperature. Say 68 F. Then press the Set button again for 3 seconds to save. Now press the install button again, but this time press the down arrow until you see HD. I set it to 1, which means if it gets one degree smaller or larger than 1, it turns on or off. Basically, 68F is actually 66-67.5F. The main issue I had was the shaky display. (see picture) Another problem, the sensor sometimes does not give the correct temperature. I have another low tech temp sensor and it is accurate. So make sure you keep an eye on your temperature otherwise you could kill your plants or worse your reptiles.

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