40KHz Waterproof Ultrasonic Probes – Split Transmitter & Receiver
40KHz Waterproof Ultrasonic Probes – Split Transmitter & Receiver
40KHz Waterproof Ultrasonic Transducer Probes – Split-Type Transmitter & Receiver
These precision-engineered 40KHz waterproof ultrasonic transducer probes are built for professionals and hobbyists who demand reliable sensing performance in wet or submerged environments. Available in 10mm, 12mm, and 16mm diameters, and sold in packs of 5 or 10, these split-type transmitter/receiver pairs are ideal for distance measurement, object detection, liquid-level sensing, flow metering, and DIY electronics projects. Made in Mainland China.
Key Features
- Operating Frequency: 40KHz — optimal for short-to-medium range detection
- Waterproof Design: Fully sealed housing allows use in wet, humid, or submerged conditions
- Split-Type Configuration: Separate transmitter and receiver probes for greater installation flexibility
- Multiple Diameters: Available in 10mm, 12mm, and 16mm to suit various mounting requirements
- Multi-Pack Value: Choose 5-pack or 10-pack to stock your lab or complete large projects
- Wide Compatibility: Compatible with common ultrasonic driver circuits and microcontroller platforms (Arduino, Raspberry Pi, etc.)
- Durable Construction: Robust piezoelectric element encased in a sealed housing for long service life
Specifications
| Frequency | 40 KHz |
| Available Diameters | 10mm, 12mm, 16mm |
| Type | Split-Type (Separate Transmitter & Receiver) |
| Waterproof Rating | Yes – fully sealed |
| Pack Sizes | 5 PCS / 10 PCS |
| Country of Origin | Mainland China |
Common Applications
- Liquid level detection and flow measurement
- Obstacle and proximity sensing in robotics
- Industrial automation and process control
- DIY electronics and maker projects
- Underwater object detection
- Parking sensors and distance meters
Why Choose a Split-Type Waterproof Ultrasonic Probe?
Unlike standard open-air sensors, these split-type waterproof probes separate the transmitting and receiving elements into individual housings. This design eliminates blind-spot issues common in single-element sensors and allows them to be mounted independently — giving you superior flexibility for tight or complex installations. The waterproof casing ensures stable performance even in harsh, moisture-rich environments.
For a deeper understanding of ultrasonic sensing technology and its industrial applications, visit the National Institute of Standards and Technology (NIST) – Acoustics.
Frequently Asked Questions
Q: What is the difference between the transmitter and receiver in a split-type ultrasonic probe?
A: In a split-type configuration, the transmitter probe emits the 40KHz ultrasonic pulse, while the receiver probe detects the echo or the direct signal from the transmitter. Separating them allows for through-beam detection and eliminates the dead zone present in single-unit sensors, making them ideal for precise distance and flow measurement applications.
Q: Are these ultrasonic probes compatible with Arduino or Raspberry Pi?
A: Yes. These 40KHz waterproof ultrasonic transducers are compatible with standard ultrasonic driver circuits and can be interfaced with microcontrollers such as Arduino and Raspberry Pi using appropriate driver boards or signal-conditioning circuits. Always verify the voltage and signal requirements of your specific driver board.
Q: Which diameter size should I choose — 10mm, 12mm, or 16mm?
A: The choice depends on your mounting constraints and application. 16mm probes generally offer higher sensitivity and output power, making them suitable for longer-range or underwater use. 12mm and 10mm probes are more compact, ideal for tight-fit installations or applications with limited mounting space. All three diameters operate at 40KHz.
Q: Can these probes be fully submerged in water?
A: Yes. The probes feature a fully sealed, waterproof housing specifically designed to function reliably in wet, humid, or submerged environments, making them well-suited for liquid level sensing, flow metering, and similar water-contact applications.