I am relatively new to electrical engineering, but I am making a small cooler box using a Peltier. At first, I used a Tec1-12706 without researching first, and it barely went under 12c12 °C at the cold side. I need a Peltier module that is 40mm40 mm x 40 mm that is 12v12 V that goes to at least under 0c0 °C. I have looked at ~ 20 modules, but no matter what, none tell you how cold it can get. It just says QmaxQMAX that just says at what voltage it is when it is the coolest, but never say temperature.
How can I don't know where to find a good Peltier, so do any of you know a good reasonably priced Peltier module that fitsmatches my qualifications.specifications when it is not listed in the datasheet? Can I convert it from some other parameter?