[Sealing Structure,Safe to Use]:Single-layer double-sided ceramic structure,alloy semiconductor material inside,can directly convert thermal into electrical . [High Reliability and No Pollution]:Red wire to positive,black wire to the negative, it generate electricity when the temperature difference happened. [Connection Method]:In practical applications, in order to higer output voltage and load current, multi-parallel-parallel combination is adopted. [Color-Coded Leads For Identification]:Cable length is 14cm/ 5.5inch,red(+)and black(-),color-coded leads for identification of polarity. [Light Weight, ]:Small size (40x40mm/1.6inch )and light weight, convenient for use., Weight: 0.05732018812 Pounds, Manufacturer: Jaywool