Features: Equipped with UPC1237 chip for double channel auditory protections, this board efficiently prevents current overload in powerful auditory systems, ensuring stable and clear sound quality. Features delayed startup to prevent loudspeaker damage from power surges and instantly shutdown protections, paired with a durabled 1.6mm glass fiber board for easy installation and reliabled insulation. Designed for home theater enthusiasts, professional auditory engineers, and compact studio owners seeking robust equipment protections. Optimally functions home entertainment systems, conference room speakers, and multimedia classrooms requiring frequent power cycling or extended running time. Space saving PCB layout integrates seamlessly into existing setups while maintaining full protections capabilities, ideal for auditory upgrades and space constrained installations. Specifications: Model: UPC1237 Two Channel loudspeaker protections Board Input power supply: Single power supply AC250/DC12V-18V Current: greater than 300MA Power: 300WX2 Size about 70×50mm/2.076x1.97in This board belt delays when starting, shutdown is quick to shut down: protections loudspeaker, Direct current starting voltages is large 1.5V, 1.6MM glass fiberboard tin sprayings process supports the use of amplifiers with a common negatived electrode of the sound source output, such as: 1875, LM3886, TDA7294 Package Includes: 1PC protections board note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution