WWZMDiB 4Pcs TEC1-12706 Semiconductor Refrigeration Tablets40x40MM/1.57×1.57″ Heatsink Thermoelectric Cooler Cooling Module

Description

The working state of the cooling sheet is that one side is cooling and the other is heating. When working, a radiator or a water-cooling radiator must be installed on the cooling surface, otherwise it will burn (the radiator must be coated with thermal grease)Refrigeration sheet has the literal cold side and no literal is the hot sideUnsure of hot and cold sides 1 PCS 1.5V battery can be used to test