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Home / Computer Hardware, Monitors & Peripherals / Ultrasonic Ranging Module HC-SR04 Test Board with Serial Output and Digital Display

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Operating Voltage 5V DC
Measurement Range 2cm to 400cm
Accuracy ±3mm
Interface Type UART Serial Output
Display Type 0.56 inch LED Digital Tube
Ultrasonic Frequency 40kHz
Board Dimensions 45mm x 28mm
Weight 15 grams
Operating Temperature -15°C to 70°C
Package Contents 1 x Test Board, 1 x Pin Header Set

5 reviews

A

Anonymous

Apr 02, 2026

Rating: 5/5

Great for prototyping

Saves time not wiring up serial monitor. The LED display is bright and easy to read during initial tests.

A

Anonymous

Mar 19, 2026

Rating: 3/5

Decent but basic

Works well but wish it had metric toggle. Default units are fine but flexibility would be nice.

A

Anonymous

Mar 14, 2026

Rating: 5/5

Accurate readings

Compared to tape measure, very close. Stable readings in indoor environments.

A

Anonymous

Feb 27, 2026

Rating: 4/5

Good value

Display is bright, pins need soldering. Works well for checking sensor functionality before integrating.

A

Anonymous

Feb 22, 2026

Rating: 5/5

Perfect for students

Easy to understand distance visually. Great tool for teaching electronics and sensor basics.

5 FAQ

Q: What is the maximum detection range?

A: The maximum effective range is 4 meters.

Q: Is this board waterproof?

A: No, this is a test board for indoor use only.

Q: Is this compatible with 3.3V logic?

A: It is designed for 5V, but TX can connect to 3.3V RX with caution.

Q: Do the headers come pre-soldered?

A: No, headers are included in the package for you to solder.

Q: What is the baud rate for the serial output?

A: The default baud rate is 9600 bps.

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