RT40K High Sensitivity Split Ultrasonic Sensor 🔊

The RT40K High Sensitivity Split Ultrasonic Sensor is a precision 40 kHz ultrasonic transducer pair engineered for accurate distance and object detection across a wide range of environments. Its split transmitter/receiver design enhances placement flexibility and signal integrity, making it ideal for robotics, industrial automation, and embedded systems based on Arduino, Raspberry Pi, and other microcontroller platforms.

Key Features ✨

• High sensitivity: Detects subtle ultrasonic reflections for consistent, precise measurements.
• Split design: Separate transmitter/receiver elements enable flexible installation and improved isolation.
• Durable construction: Rugged aluminum outer body built for reliable performance in demanding environments.
• Wide detection range: Measures from 0.2 m to 18 m for long-range sensing in large spaces.

Technical Specifications 📊

• Maximum Input Voltage: 80 V
• Sensitivity: Min. -65 dB
• Nominal Frequency: 40 kHz ± 1 kHz
• Usage Method: Transmitter/receiver
• SPL: 114 dB
• Orientation (beam angle): 80°
• Static Capacitance: 2200 pF
• Detectable Range: 0.2–18 m
• Operating Temperature: -20 to +70 ℃
• Weight: 2.31 g
• Diameter: 16 mm
• Outer Body: Aluminum

Applications 🚀

• Robotics: Obstacle detection, SLAM support, and autonomous navigation.
• Automotive: Parking assistance and proximity sensing.
• Industrial automation: Level measurement, object detection, and conveyor monitoring.
• Security systems: Intrusion detection and perimeter monitoring.

Integration Tips for Arduino, Raspberry Pi, and Microcontrollers 🧩

• Drive the transmitter with an appropriate ultrasonic driver circuit to meet the specified voltage (do not drive directly from GPIO).
• Use a receiver amplifier or dedicated ultrasonic front-end to condition echo signals for reliable ADC or digital capture.
• Time-of-flight measurement can be implemented via microcontroller timers for accurate distance measurement.
• Ideal for custom modules and electronics components projects requiring long-range 40 kHz sensing.

Package Contents 📦

• 1 × RT40K High Sensitivity Split Ultrasonic Sensor Set (1 pair)

Why Choose RT40K? 💡

Combining high sensitivity, a flexible split design, and a wide detection range, the RT40K is a robust choice for engineers and hobbyists building reliable ultrasonic systems with Arduino, Raspberry Pi, and other microcontroller-based platforms.