I use am atc800+ its a bigger box with a wipe down surface and much bigger lit red led display and a 20a relay on the cooling circuit.
It has no calibration option its heats cools to the degree where the stc is accurate to the tenth of a degree.
its works well for me, and i do like that i can tell the brewfridge temp with a glance fro the other side of the room, with younger eyes and good light u may see an stc display from a distance too
wiring is the same, and the atc costs 4x the price of the stc's last time i checked, circa £60... if buying again i would go stc1000, in fact i did when i needed a controller for a shelf chiller.

ist update for months n months..
Fermnting: not a lot..
Conditioning: nowt
Maturing: Challenger smash, and a kit lager
Drinking: dry one minikeg left in the store
Coming Soon Lots planned for the near future nowt for the immediate
