A thermoelectric cooler for you to diy a refrigeration equipment, and you need to prepare other cooling devices like a cooling fan, and do not direct contact with the cooling surface- which has no words, it can work normally with a 12v power supply, and try not to use it for a long time.
Specifications
External dimensions: 40 * 40 * 3.75mm
Chip Type: TEC1-12706
Internal resistance: 2.1 ~ 2.4Ω (ambient temperature of 23 ± 1 ℃, 1kHZ Ac test)
Maximum temperature: △ Tmax (Qc = 0) above 59 ℃.
Operating current: Imax = 4.3-4.6A (rated at 12V)
Rated voltage: 12V (Vmax: 15V starting current 5.8A)
Working environment: temperature range -55 ℃ ~ 83 ℃ (high ambient temperatures drop directly affect the cooling efficiency)