Review on DIGITEN DTC101 Digital Temperature Controller - Greenhouse Thermostat Plug for Heater, Heat Mat, Aquarium, Reptile Incubation, Homebrewing - Heating & Cooling Mode by Trey Michaels

Before using the controller I did some tests with the backlight. The controller did NOT turn on at a certain "turn on" temperature. but turns on either a few degrees below or a few degrees above the specified temperature. Also, the controller didn't shut off at a certain "shutdown" temperature, but shut off again a few degrees below or a few degrees above a certain temperature. Not happy so I returned.