Features: Advanced Hall Effect sensor enables response to door movements, optimizing energy efficiency by 50% and extending refrigerator lifespan through precise control of interior lighting and cooling systems. Small PCB switches features moisture resistant construction and thermal stability, ensuring reliable performances in humid kitchen environments while supporting 10+ customizable operation modes. Ideal for refrigerator owners and commercial refrigeration technicians seeking low maintenance upgrades for appliance optimization. Perfectly integrates into household kitchens, commercial cold storage units, and automated door systems where corrosion resistant magnetic switches ensure consistent operation. Outperforms mechanical switches with contact operation and anti corrosion coating, delivering 80% fewer failures in extreme temperature/humidity conditions. Specifications: Type: Magnetic Door switches Circuit Board Material: PCB Color: Green Size: Approx. 0.79x0.59inch(2x1.5cm) Package Includes: 1x Magnetic Control Door switches Circuit Board note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.