Specifications:
Type: Ultrasonic Distance Measurement Kit
Power Supply: AC 9~12V
Board Size: 94mm x 80mm
Measurement Range: 0.2 - 3 meters, with a precision to 1cm
Difficulty Level: Intermediate (DIY soldering)
Application: Electronics assembly and hands-on training

Note:  This is an unassembled kit; you will need to solder it.

Function Description:1. This ultrasonic rangefinder is used for ultrasonic distance measurement. The measurement range is 0.2-3 meters, with an error of 1cm.2. To ensure measurement accuracy, the ultrasonic probe must be kept on a horizontal line and not tilted.3. The board uses some surface-mount components. This is for practicing soldering surface-mount components. When soldering surface-mount components, the soldering iron tip should not be too hot; it should be done lightly and quickly, otherwise the surface-mount components may overheat and be damaged.4. There are four function buttons:S1: Press and hold S1, the digital display will freeze,indicating that a distance L1 has been determined. Release S1 to continue measuring.S2: Press and hold S2, the digital display will freeze, indicating that a distance L2 has been determined. Release S2 to continue measuring.S3: The result of multiplying distance L1 and distance L2.(Note:Due to the limited display capacity of the digital tube, only 4 digits can be displayed. Therefore, the multiplication result is only correct when L1 and L2 are two digits.)S4: Press S4. The buzzer will sound after 10 seconds. Press the reset button to return to normal.
Features:
1. Ultrasonic sensor for precise distance measurement applications.
2. Digital display module provides clear readings during use.
3. Designed for soldering practice (includes surface-mount component setup).
4. Suitable for robotics, electronics projects, and educational activities.
5. Powered by a stable AC voltage input (9-12V).
6. Multi-function operation with intuitive button controls for freezing measurements and calculations.

Package Includes:
1 x Ultrasonic Measurement Kit