This Programer is an elitech ecs 16 digital temperature controller for Fridges and freezers can be used on all fridge,freezers and chest freezers plus 100's of fridge freezer bottle coolers etc like. AEG, Arthur-Martin-Elux, Bosch, Electrolux, Hotpoint, Husqvarna, John Lewis, Indesit, Neff, Privileg, Rex, Rosenlew, Siemens, Zanker, Zanussi.
As you can see after setting up the fridge at 2 degrees with a hysteresis of 3 the fridge is cycling between 2 and 5 degress
the freezer is set up on -17 with hysteresis of 2 degrees and is cycling between - 15 and 18 degrees
it will always need some calibration depending on where you fit the sensors
The pdf for the manual is below but these notes will help you
