This product is a Sound Sensor DIY Kit, made of solid materials, safe and firm. It can last for a long time without being easily damaged. The product is a practical Acoustic Control Switch Kit that can bring you more convenience, allowing you to have comfortable experience. Features -Color:Green -Material:Board, copper -Size:5.00X4.20X0.20cm/1.97X1.65X0.08in -Easy to use for beginners and electronics enthusiasts: this circuit board kit for creating sound-controlled circuits is designed to be user-friendly and accessible for those who are new to electronics or have a passion for it. -Enables the creation and application of sound-controlled circuits: with this kit, users can easily design and implement circuits that respond to sound, allowing for a wide range of applications and creative possibilities. -Provides soldering exercises for hands-on skill development: the Electronic Acoustic Control Switch kit includes various electronic components that require soldering, providing an opportunity for users to practice and improve their soldering skills while assembling the circuit board. -This Integrated PCB Module is designed to be compatible with home automation systems and can be used to create sound-controlled switches for various applications, enhancing convenience and efficiency. -The Acoustic Control Switch DIY Kit is equipped with sturdy electronic components that ensure the stability and reliability of the sound-controlled circuits, providing a practical and solution for users. Package list: 1 x circuit board 37 x accessories