Specifications:
Material: Circuit board + components
Type: DIY Parts Set  with Shell
Power Supply: 5V DC or 3 x AA batteries (not included)
Measuring Range: 0.01 to 4.00 meters
PCB Dimensions: 72 x 62 mm (2.83 x 2.44 inches)
Housing Dimensions: 89 x 77 mm (3.50 x 3.03 inches)
Note: This is a DIY kit, you need to assemble and solder.
Features:
1.Highly Integrated System: Includes a dedicated circuit board, STC microcontroller, HC-SR04 precise measuring module, digital tube for display, and buzzer for alarms, offering a compact, streamlined design.
2.Simple Setup: Requires no programming, allowing users to operate it directly after proper assembly and connection to the power supply.
3.Accurate Distance Measurement: Equipped with a high-precision ultrasonic probe to reliably measure distances up to 4 meters, ensuring accurate feedback for various applications.
4.Real-Time Distance Display: A bright digital screen shows real-time distance to obstacles, allowing instant visibility of measurement data for improved user awareness.
5.Customizable Alarm Function: Adjustable alarm distance provides audible alerts when the measured distance falls below user-defined thresholds, improving safety in reversing scenarios or proximity monitoring.

Package Included:
1 x Distance Measuring Module
1 x Shell