Features: Featuring 16A capacity and silver contact, this stereo loudspeaker protective board deliver conductivity and extended life for superior sound safety. Equipped with isolation technology, overload protective, and wide 12V-20V input, it prevents current and automatically shuts down to shield loudspeaker from damage while ensuring easy installation. Designed for audiophiles and professional who prioritize sound protective in their home or studio setups. Ideal for home theaters, car sound, and professional amplifiers where and device protective are essential across varying environments. With strong stability, compatibility across diverse sound equipment, and a clear light for real time monitoring, enhances overall reliability and user convenience. Specifications: Component:Metal Size:Approx.68x58mm/2.68x2.28inch Working: 12V-20V Number of channel: 2.0 double channel Package Includes: 1Pc Protective Board note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.