DIY Clock Kit: DigitalTube Temperature Alarm and Weekday Display, powered by a 51 MCU and DS1302 real-time clock. Includes 4 LED modules for the display. Endless assembly fun: A hands-on kit that fuels learning and curiosity, with four LED modules to assemble and configure as you build. Functional and practical: Displays time, date, temperature and weekday, plus a temperature alarm function. The compact display is both attractive and useful for home or classroom use. Learning and training: Widely used in schools to teach basic mechanical and electronic skills, circuit operation principles, soldering practice and troubleshooting. Adjustable brightness and color: Screen brightness can be set and auto-adjusted, with options for color customization or automatic color-changing modes to suit your environment. Use scenarios: - Classroom STEM project to demonstrate timekeeping, sensor readings and circuit assembly. - Home desk clock with ambient color-changing lighting and temperature readout. - Maker club or hobby project to practice electronics, wiring and soldering. Includes: 4 LED modules and core components for building a functional digital clock with temperature and weekday display.