Features: and high quality Frame structure: Wrap-around double-sided distribution frame Reliable connection: The connection of inner and outer wires adopts multi-contact winding type connection, providing reliable connection and good air tightness Safe and reliable protection: Offers overvoltage and overcurrent protection functions. The security unit is composed of semiconductor discharge tubes and polymer PTC or uses integrated chips 4 Level alarm: Features 4 level sound and light alarm for security unit, security wiring row, column alarm, and general alarm Reliable grounding: Includes a reliable grounding system Specifications: Product Name: Lightning Protection Unit Module Connection: Snap Material: Silver-plated copper Size: Approx. 12x4x2cm / 4.72x1.57x0.79in Note: Please allow 0-1cm error due to manual measurement. Please ensure you are comfortable with this before purchasing Due to differences between monitors, the picture may not reflect the actual color of the item Package includes: 10 x Lightning Protection Unit Module