Product Details
1. Distance measurement range: 5cm–3 meters. Achieves maximum precision within 3 meters, meeting measurement needs across various spaces.
2. Three-digit LED display: Measured distances appear on the digital display (shown in meters).
3. Features buzzer alarm, automatic voice announcement, and automatic distance broadcast functions
4. Power supply options: DC power adapter or battery compartment. Select one power source at a time; do not use both simultaneously
5. Easy soldering and simple operation, ideal for DIY enthusiasts, hands-on projects, and obstacle detection applications
Power Supply Voltage: DC 4.5-5.5V
Measuring Range: 5cm-3m
Display Method: LED 7-segment display
Power Source: DC 5V or 3 x 1.5V AA batteries (batteries not included)
Power Connector: DC 5.5*2.1mm
PCB Board Dimensions: 78*67mm
4 Button Functions:
Leftmost “-” button reduces alarm distance. Press only within the settings menu; otherwise ineffective.
The “+” button increases the alarm distance. It is only effective when pressed in the settings interface; pressing it normally has no effect.
The “SET” button is the configuration key. Press once to enter the settings interface, where the + and - buttons become active. Press again to exit the settings interface.
The “speaker icon” button on the far right is the manual voice playback button. Pressing it once will play the current distance measurement data.
Component Name Quantity
PCB Board 1
HC-SR04 Ultrasonic Distance Module 1
0.56-inch 3-digit Common Anode 7-Segment Display 1
40-pin IC Socket 1
STC89C52 (Pre-programmed) 1
DC005 Connector 1
USB to DC005 Power Cable 1
AAA Battery Holder (3-Cell) 1
5V Active Buzzer 1
5mm Red LED 1
8x8 Latching Switch 1
8x8 Latching Switch Cap 1
6x6x14 Keypad 4
2K Resistor 9
4.7K Resistor 7
9012 Transistor 4
22pF Ceramic Capacitor 3
12MHz Crystal Oscillator 1
10μF 25V Electrolytic Capacitor 2
50mm Silicone Wire 2
29mm Speaker 1
104 SMD Capacitor 1
47μF 16V Tantalum Capacitor 1
Voice Chip 1
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