About This

• ✅ Designed specifically for beginners – fully through-hole components that are easy to insert and solder, requiring no complex techniques; even first-time users of a soldering iron can complete the soldering with ease. bridges and cold solder joints.
• ✅ Hardware optimization for hassle-free operation – Key components have been enlarged for easy handling; 4-ring resistors are used for improved visibility; PCB pads are over 30% larger to prevent solder bridges and cold solder joints.
• ✅ One investment, two rewards – for the price of one, you can practice your welding skills and build a fully functional, practical four-player buzzer system with your own hands.
• ✅ Includes a step-by-step printed manual – written in plain language with no technical jargon, clearly explaining the entire process so even beginners can complete it on their own, minimizing the chance of failure.
• ✅ Powered via a standard USB-C port – no more battery anxiety or frequent battery swaps, and no need to worry about using a proprietary power adapter. It's eco-friendly, hassle-free, and more convenient.

Overview

• Brand : Guanruixin
• Included Components : 1 x Complete set of through-hole components, including spares (ICs, resistors, capacitors, LEDs, switches, USB-C connector), 1 x Detailed Paper Manual with Step-by-Step Guide and Fault Diagnosis Table, 1 x Guanruixin [ To Be Fair ] FR-4 PCB, Note: Does not include soldering tools (soldering iron, solder wire, etc.) or a USB-A to USB-C cable 1 x Complete set of through-hole components, including spares (ICs, resistors, capacitors, LEDs, switches, USB-C connector), 1 x Detailed Paper Manual with Step-by-Step Guide and Fault Diag… See more
• Item Weight : 3.68 ounces
• Number of Items : 1
• UPC : 606314514860