Features: Elevates your electronics skills with the Electronic Ultrasonic Distance Measuring Soldering, featuring a adjustable alarm distance for enhances project. The ultrasonic module excels in precise obstacle detection, while its 51 microcontroller base and alarm ensures performances in various applications. For students, hobbyists, and adult learners, this Soldering serves as a perfect introduction to the world of electronics and hands on educational experiences. Transform your garage or classroom into a creative lab with this fun Practice Set, where you can build reverse radars for car or explore other ultrasonic measuring projects. Not only this provide a practical learning platform, but it also encourages innovation and problem solve, making it a valuable tool for engineers and enthusiasts. Specifications: Material: Plastic Input: DC4.5-5.5V Size: As Shows Package Includes: 1 Set Distance Measuring Soldering note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.