sound with the LM3915 sound levels indicators DIYer set, featuring a 10 segment LED display that provide a clear visual representation of sound intensity Perfect for home sound systems tuning, DIYer sound projects, classroom demonstrations, and troubleshooting sound equipment issue Crafted from durability and metal materials, this sound spectrum analyzers ensures long lasting and reliability in applications This set is designing for easy assembly and accurate sound levels indication, for various sound devices and supporting dc9v-12v power input For electronics enthusiasts, DIYer sound equipment creators, educators, and anyone interested in sound technology, Manufacturer: Woedpez