JSN-SR04T / AJ-SR04T Waterproof Ultrasonic Sensor Module

The JSN-SR04T is a waterproof ultrasonic rangefinder module designed with an industrial-grade integrated ultrasonic probe for stable and reliable performance. It works as easily as the HC-SR04, with precise distance measurements starting from 0.5 cm and a maximum range of up to 4.5 m. Its compact size makes it portable and easy to integrate into projects. Perfect for wet or harsh environments, it is widely used in horizontal ranging, obstacle avoidance, automation, object monitoring, traffic control, security, AI, and educational research.

Product Parameters

• Operating Voltage: DC 3.0 – 5.5 V
• Operating Current: < 8 mA
• Probe Frequency: 40 kHz
• Maximum Range: 600 cm
• Minimum Range: 20 cm
• Accuracy: ±1 cm
• Measuring Angle: 75°
• Trigger Signal: TTL pulse > 10 µs
• Output Signal: Pulse width level signal / TTL

Features

• Compact and easy to use
• Low voltage, low power consumption
• High measurement accuracy
• Strong anti-jamming capability
• Integrated waterproof probe with wire, ideal for wet and harsh environments

Connection with Arduino

The JSN-SR04T can be easily interfaced with Arduino or similar microcontrollers. Typical pin connections are as follows: VCC: 3–5.5 V (Power Positive) | Trig: Control Input | Echo: Output Signal | GND: Power Negative

For code samples and a complete guide, visit our resources section.