Anonymous
Mar 21, 2026
Rating: 4/5
Good value sensor
Accurate enough for indoor use. Sometimes struggles with soft surfaces but overall great for the price point.
Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Operating Voltage | 5V DC |
| Operating Current | 15mA |
| Operating Frequency | 40Hz |
| Measuring Range | 2cm - 400cm |
| Measuring Angle | 15 degrees |
| Trigger Input Signal | 10uS TTL pulse |
| Echo Output Signal | TTL level signal |
| Dimensions | 45mm x 20mm x 15mm |
| Weight | 10g |
| Interface | 4 Pin (VCC, Trig, Echo, GND) |
Anonymous
Mar 21, 2026
Rating: 4/5
Good value sensor
Accurate enough for indoor use. Sometimes struggles with soft surfaces but overall great for the price point.
Anonymous
Mar 20, 2026
Rating: 3/5
Sensitive to surface type
Works well on flat walls but gives erratic readings on fabrics or angled surfaces. You need to account for this in your code.
Anonymous
Mar 01, 2026
Rating: 5/5
Fast delivery and works
Plug and play with standard libraries. Arrived quickly and was well packaged. No issues during setup.
Anonymous
Feb 25, 2026
Rating: 5/5
Essential for obstacle avoidance
Used it on my RC car build. Reaction time is fast enough to stop before hitting walls. Very satisfied with performance.
Anonymous
Jan 27, 2026
Rating: 5/5
Perfect for my robot project
Works flawlessly with Arduino Uno. The distance readings are consistent and the library support is excellent. Highly recommend for beginners.
Q: Can I use this with 3.3V logic boards?
A: While VCC should be 5V, the echo output is 5V. You may need a voltage divider for the Echo pin if connecting to a 3.3V microcontroller.
Q: What library do you recommend?
A: The standard NewPing library works best for this module as it handles timing and multiple sensors efficiently.
Q: What is the accuracy?
A: Typically within 3mm under ideal conditions. Accuracy may vary based on surface texture and environmental temperature.
Q: How many pins does it have?
A: It has 4 pins: VCC, Trig, Echo, and GND. Please refer to the datasheet for the correct pinout orientation.
Q: Does it work underwater?
A: No, this is an air ultrasonic sensor. It is not waterproof and sound waves propagate differently in water.