Features: The MT18V protection board blue board is a high-quality protection board that can effectively protect circuits from damage such as overcurrent, overvoltage, and overheating. High performances protection, with fast response and high-precision protection function, can cut the circuit in milliseconds, ensuring equipment safety. Multi functional design, suitable for various electronic devices such as electric vehicles, battery packs, solar systems, etc., providing comprehensive circuit protection. Craft from quality materials, it has characteristics such as high temperature resistance, pressure resistance, waterproof and dustproof, ensuring long-term stable operate. Perfect for electronics manufacturers, bike repair technicians, solar system installers, and savvy individuals seeking stable circuit protection solution. Specifications: Material: PCB Size: about 8x6cm/3.15x2.36inch Package Includes: 1x Battery Protective Board note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.