Item Name: TEG Module Thermoelectric Power Generator SP1848-27145 Electronic Components. Temperature electromotive force (a): > 190x uV/ Optimum value (Z): 2.5 ~ 3x10-3W/Working Environment: -60~125Thermoelectric parameter:Size: 4x4x0.34cm/1.57x1.57x0.13inchModel: SP1848-27145Thermal conductivity (K): 15~16x10-3-W/ cmColor: WhiteLead Length: about 30cmConductivity: 850~1250 -1.cm-1Quantity: 1PcProduct structure and compositionSingle-layer double-sided ceramic packaging structureThe package is 704 silica gelInside is a semiconductor material made of bismuth telluride (Bi2Te3)Soldering agent is low temperature solder (Tin-Bismuth Alloy)Description:100% brand new and high quality.Heating side is emptyRed wire to positive, black wire to the negative, it generate electricity when the temperature difference happened20 degree temperature difference: open-circuit voltage 0.97V,generated current: 225MA40 degree temperature difference: open circuit voltage 1.8V, generated current: 368MA60 degree temperature difference: open circuit voltage 2.4V, generated current: 469MA80 degree temperature difference: the open circuit voltage 3.6V, generated current: 558MA100 degree temperature difference: open circuit voltage 4.8V, generated current: 669MANote: The above values are for reference only, the wiring in actual use, and the step-up board, there will be loss of current.Note:1.Please allow 1-2cm error due to manual measurement.