I have a 30 Y.O. 60L Engel Fridge, 12V240V. Its on its second heart transplant and going strong.
Until recently I was running an aux temperature controller as the thermostat was difficult to 'dial in' for internal temps. I am after repetition and accuracy of setpoint. Unfortunately I got the controller wet and it went to heaven. The manufacturer is no longer around - was a home brew sort of box off the internet. I sourced the controller after pulling it to bits, from China, but I am at my witts end to get it going again. Right now i am on my fourth unit and each replacement item has had a different fault - I am over it.

Does anyone know of a stand alone box with a digital setpoint that is adjustable, complete with temp probe, and preferably with flying leads, that is rated for say 10a continuous - the engel draws 6amps - its the old engine.

It needs +/1 input, +/- output and a temp probe, although I have a stock of these now. The box can be mounted on the top of the fridge.