ITEM NAME:Peltier cell cooling 67 Degree 30W Thermoelectric Cooler H9T7 Peltier cell cooling 67 Degree 30W Thermoelectric Cooler H9T7 new quality and rare item unobtainable and reliable price Simple to install and use Size: About 4 x 4 x 0,4cm Material: Ceramic Features: 1. Color: White 2. Maximum power: About 30W 3. Maximum temperature: 67 Degree 4. Operation: place one hand on both sides of the Peltier thermoelectric cell, and connect the wire of the thermoelectric cooler to the two poles of the battery with the other hand, if you find that one side of the Peltier thermoelectric cell and fresh and the other and warm, this item in good.Operation: place one hand on both sides of the Peltier thermoelectric cell, and connect the wire of the thermoelectric cooler to the two poles of the battery with the other hand, if you find that one side of the Peltier thermoelectric cell and fresh and the other and warm, this item in good condition and it can 'operate normally.