If you are ever wondering if your unit is operating at a stable recommended temperature, there is an ingenious test that you can perform that anyone can do. So, here is what you do. To start, fill a pot with water and allow it to reach 110 degrees. You will need a thermometer to determine this exact temperature and when it has reached this, fill the container of your unit with this hot water. You will want to use a suitable amount of water to get an accurate reading.
For jars, fill them up all the way and for multiple quart containers, fill them up at least halfway (it is just water so you can fill it to the brim if you want). Now, turn on the unit and allow it to ferment as you would with actual ingredients inside. Every one or two hours, check the temperature of the water and if it is maintaining a constant temperature somewhere between 105 to 112 degrees, you are golden.