Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	JSN-SR04T
Operating Voltage	DC 5V
Measurement Range	2cm to 450cm
Blind Zone	0cm (No Blind Zone)
Waterproof Rating	IP67
Probe Type	Dual-Probe Integrated
Interface Protocol	UART / TTL
Cable Length	2.5 meters
Operating Temperature	-20°C to +70°C
Application	Robot Obstacle Avoidance, Liquid Level Detection

6 reviews

Anonymous

Mar 25, 2026

Rating: 3/5

Good but sensitive to angle

The sensor works well generally, but I noticed if the target surface is at a sharp angle, the reflection can be lost. This is typical for ultrasonic sensors, but worth noting for precision applications.

Anonymous

Mar 24, 2026

Rating: 5/5

Perfect for outdoor robotics

This sensor works flawlessly in the rain. The zero blind zone claim is accurate; it detects objects immediately in front of the probe, which was a problem with my old HC-SR04 units.

Anonymous

Mar 24, 2026

Rating: 5/5

Easy to interface with Arduino

Documentation was clear, and connecting it to my Arduino Uno was straightforward. The UART output makes parsing distance data very easy without complex timing code.

Anonymous

Mar 24, 2026

Rating: 5/5

Reliable and consistent

Integrated this into a custom rover project. The readings are stable even in windy conditions. The dual-probe design seems to reduce noise significantly compared to single probe modules.

Anonymous

Mar 12, 2026

Rating: 5/5

Survived a harsh winter

Installed this last autumn for an automated irrigation system. It survived freezing temperatures and heavy snow without any issues. Highly recommended for outdoor durability.

Anonymous

Mar 07, 2026

Rating: 4/5

Great for tank level monitoring

Used this to monitor water levels in a large outdoor tank. The waterproofing holds up well. Only giving 4 stars because the cable could be a bit longer for my specific setup, but the performance is solid.

5 FAQ

Q: Can this sensor measure liquid levels inside a closed metal tank?

A: Yes, as long as the probe is mounted on the top looking down and does not touch the liquid directly, it can measure the distance to the liquid surface effectively.

Q: Can I use multiple of these sensors on one robot without interference?

A: Yes, you can use multiple units. To avoid cross-talk, you should trigger them sequentially rather than simultaneously, or physically separate them and shield them if simultaneous operation is required.

Q: What is the beam angle of this ultrasonic module?

A: The beam angle is approximately 15 degrees. This provides a good balance between detection range and specificity for obstacle avoidance tasks.

Q: Is the output serial data compatible with Raspberry Pi GPIO?

A: Yes, the module uses TTL UART logic which is compatible with Raspberry Pi. However, ensure you use a logic level shifter if your Pi operates at 3.3V to prevent potential damage, although many users report direct connection working at low speeds.

Q: Does the package include mounting brackets?

A: The standard package includes the sensor module with its integrated cable. Mounting brackets or screws are not included, but the probe housing has standard holes for M3 screws.

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