General description The 8Pcs Series 40X40Mm Thermoelectric Power Generator SP1848-27145 Peltier Module TEG is designed for efficient thermoelectric energy conversion. This high-quality module features a single-layer double-sided ceramic packaging structure, making it durable and reliable for various applications. Technical specifications Length: about 30cm Thermal conductivity (K): 15~16 x 10 -3 W/Celsius cm Value (Z): 2.5~3 x 10 -3 W/Celsius Conductivity: 850~1250 ohm -1 .cm -1 Temperature electromotive force (a): 190 x uV/Celsius Working environment: -60~125 Celsius Size: 4 x 4 x 0.34 cm / 1.57 x 1.57 x 0.13 inch Color: White Other information Material: Bismuth Telluride Case material: 704 silica gel Interior material: Bismuth telluride (Bi 2 Te 3 ) semiconductor Soldering agent: Low temperature solder (tin-bismuth alloy) Package Contents: 8 x SP1848-27145 TEG Peltier Module Note: Light reflection and different displays may cause the color of the item to differ slightly from the