Usage Tips:Features: and high quality Using aluminum + TEC1-12706 semiconductor cooling plate, durable. The complete sealing structure isolates the moisture in the air. An excellent DIY kit for electronic enthusiasts in semiconductor refrigeration applications, suitable for computer radiators and cooling in small spaces. Completely assembled, no need to do it, saving time. Positive red and negative black, easy to install. Save space, can be installed anywhere, easy to install. DIY Peltier kit includes TEC1-12706 semiconductor cooler and other accessories, compact size. High heat dissipation efficiency, equipped with a cooling fan, the heat dissipation effect is better, and the heat can be easily dissipated within a few minutes. No noise, no vibration, no refrigerant required. Package Includes: 1Set x Thermoelectric Peltier Refrigeration System Kit Cooler ( finished ) Specifications: Product name: thermoelectric peltier refrigeration refrigeration system cooler Material: ABS + Aluminum alloy Power: 12V DC 6A (not included in this kit) Cooler model: osmo (with word side is cooling surface; no word side is radiant surface) Size: approx. 119mm/4.68in internal resistance: 2.1~2.4in. (Ambient temperature 23 1 , ac test 1khz) Maximum temperature: tmax (qc = 0) above 67 . Operating current: imax = 4-4.6a (rated at 12v) Cooling power: qcmax 70w Working environment: temperature range-55 ~ 83 (high ambient temperatures directly affect the cooling efficiency) Main color: silver Net weight: 350g Tips: cold end frost requires the room temperature is low, it is not what the environment can be frozen, freeze the room temperature below 25 degrees. note: This installation module is assembled and you don't need to use your hands This module without power, without thermometer. Must fititng heart heat sink radiator when powering on, not repositionable to burn peltier if armchair is not mounted. the item is finished kit.