Features: 3.Process: Standard 704 silicone rubber seals all around.4.The side with words is used for cooling, and the side without words is used for heat dissipation.5.Can work continuously, no rotating parts, no gyration effect.6.No vibration, no sliding, no noise, long service life and easy installation.7.Uses: Use in various small areas that need heat dissipation and cooling.Note: There will be a temperature difference between the two sides of the refrigerating piece connected to the 12V power supply, one side is cold and the other side is hot. Do not power on the cooler for a long time without a radiator, otherwise it will cause the inside of the cooler to overheat and cause damage.Specifications:Material: SemiconductorColor: WhiteBrand name: BQLZRModel: TEC1-19906Size: 40 x 40 x4.2mm/1.57 x 1.57 x 0.17Inch(L x W x H)Working current: Imax=6ARated voltage: DC24VPower: 120WTemperature: -55 to 83 degrees CelsiusAssembly pressure:85N/cm2Weight: 150gPackage include:5 x Thermoelectric Peltier Cooler