Lot 5 Vktech DS18B20 temperature sensors Vktech TEC1-12706 Lot 5 cells Peltier 12V Max. 80 ° C (Electronics)
Of the 5 modules furrier, with only 1 working properly. I got down to -14 ° C and under the same conditions the other 4 only gave 8 to 10 ° C. In other words, the mess! I will not even take my head to return :(