Originally Posted by thelorax121
Hmm that is about as cheap as I have seen them. Do you have to use a separate thermometer in the freezer to check the temp, or does it have the temp graduations on the controller?
First off there are no temperature graduations. The PID has a digital readout, and you will be able to read the temperature inside the freezer right off the PID. If you read the description on Ebay, the unit comes with a "K" type Thermocouple. A thermocouple is a simple temperature sensor that will connect to the PID and the other end goes into the freezer. No seperate thermometer is needed. If you decide to purchase the PID, send me a PM when you get it and I will explain how to wire it.