Features: High sensitivity refrigerator defrost sensor ensures precise temperature control for food freshness and extended appliance lifespan. plastic construction with moisture resistant design guarantees reliable performances in humid environments and easly installation. Essential upgrades for homeowners, appliance technicians, and food service businesses requiring accurate cold chain monitoring solution. Maintains stable temperatures in household freezers, commercial kitchen refrigerators, and storage facilities through rapid thermal response. Suit for major refrigerator brands, delivering long lasting frost prevention and energy efficiency for sustainable operation. Specifications: Material: Plastic Size:Approx.45cm/17.71inch Weight:150g Package Includes: 3pcs Freezer Defrosting Sensor note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color about the item.