About this item

🌊 Waterproof Ultrasonic Distance Sensor JSN-SR04T / AJ-SR04M with Cable for Arduino

The JSN-SR04T / AJ-SR04M with cable is a waterproof ultrasonic distance sensor capable of measuring distances from 20 cm up to 4–5 meters.
It comes with a 4-wire cable (VCC, GND, Trigger, Echo) for easy integration with Arduino, ESP32, Raspberry Pi, and other robotics or IoT projects.

🛡️ Features & Advantages

• 🌊 Waterproof (IP67) for outdoor or wet environments
• 📏 Measurement range: 20 cm – 4–5 m
• 🔌 4-wire cable included: VCC, GND, Trigger, Echo
• 🔊 Ultrasonic non-contact detection
• ⚡ Supply voltage: 3.3 – 5 V DC

📦 Technical Description

• 🧩 Type: Waterproof ultrasonic distance sensor
• 🌡️ Range: 20 – 450 cm
• 🔌 Operating voltage: 3.3 – 5 V DC
• 🔊 Output signal: digital (Trigger / Echo)
• ⏱️ Accuracy: ±1 cm to ±3 mm (depending on distance)
• 📏 Dimensions: approx. 42 × 21 × 14 mm
• 💧 Protection rating: IP67
• 🔌 Cable: 4 wires (~20 cm)

🛠️ Applications

• 🤖 Mobile robotics and obstacle detection
• 💧 Water or liquid level measurement
• 🏠 Home automation and security sensors
• 🚗 Parking and avoidance systems
• 🧪 Electronics prototyping and educational projects

⚠️ Usage Notes

• ❗ Avoid soft or irregular surfaces for better accuracy
• 🔧 Keep the sensor away from ultrasonic noise sources
• 🛡️ Observe correct wiring polarity

✨ Key Features

• 🌊 Waterproof ultrasonic sensor
• 📏 Range 20 cm – 4–5 m
• 🔌 4-wire cable VCC / GND / Trigger / Echo
• ⚡ 3.3–5 V DC supply
• 📦 Ideal for robotics and IoT projects