Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | DC 5V |
| Detection Range | 25cm - 450cm |
| Waterproof Rating | IP67 |
| Interface Type | UART / TTL |
| Beam Angle | Approx. 15 degrees |
| Cable Length | 2.5 meters |
| Operating Temperature | -20°C to +70°C |
| Dimensions | 24mm x 32mm (Sensor Head) |
| Compatibility | Arduino, Raspberry Pi, STM32 |
| Package Contents | 1x Sensor Module, 1x Mounting Bracket |
Anonymous
Mar 27, 2026
Rating: 5/5
Perfect for outdoor robotics projects
I needed a sensor that could handle rain and dust for my garden robot, and this JSN-SR04T works flawlessly. The waterproof casing is robust, and the readings are consistent even in wet conditions.
Anonymous
Mar 21, 2026
Rating: 4/5
Solid performance for parking sensors
Using this for a DIY car parking assist system. It reacts quickly to obstacles. The only downside is the minimum range is about 25cm, so it won't detect things right against the bumper.
Anonymous
Mar 21, 2026
Rating: 5/5
Excellent build quality
The cable is thick and well-insulated. I've been using this for obstacle avoidance on a slow-moving vehicle, and it hasn't failed once. Much better than the standard HC-SR04 for outdoor use.
Anonymous
Mar 18, 2026
Rating: 4/5
Good range but needs calibration
The detection range is impressive up to 4 meters. I had to tweak the code slightly to filter out noise at the maximum range, but once calibrated, it's very reliable for reverse radar applications.
Anonymous
Mar 15, 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 it easy to get stable distance data without complex timing logic.
Anonymous
Mar 01, 2026
Rating: 5/5
Best waterproof ultrasonic sensor
I have tried several waterproof sensors, and this one offers the best balance of price and performance. The integrated design means fewer connection points to fail.
Q: Will this work with a 3.3V logic board like ESP32?
A: The module operates on 5V power. For data communication with 3.3V boards like the ESP32, we recommend using a logic level converter on the TX/RX lines to ensure safe and stable communication.
Q: Can this sensor be submerged completely underwater?
A: While the sensor head is IP67 rated and can withstand temporary immersion and heavy rain, it is designed for air-based ranging. It is not intended for continuous underwater operation or deep submersion.
Q: Is the cable extension compatible if I need more length?
A: Yes, you can extend the cable using standard 4-pin Dupont connectors or solder extensions. However, keep the total length under 5 meters to prevent signal degradation and voltage drop.
Q: Does this module output PWM or serial data?
A: This specific integrated model outputs data via UART (Serial) protocol. Please ensure your microcontroller code is set to read serial data rather than measuring pulse width like the standard HC-SR04.
Q: What is the minimum detection distance?
A: The minimum reliable detection distance for the JSN-SR04T is approximately 25cm. Objects closer than this may not be detected accurately due to the ringing effect of the transducer.
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