Ultrasonic Probe Sensor 40kHz Distance Detection MA40S4R MA40S4S

The Ultrasonic Probe Sensor is a precision-engineered distance detection component designed for electronics projects, robotics, automation systems, and DIY builds. Operating at 40 kHz with up to 20 Vp-p, this dual-function sensor handles both transmitting (MA40S4S) and receiving (MA40S4R) roles, giving you reliable non-contact distance measurement in a compact plastic and metal housing.

Available in 2 color options, this sensor integrates easily into microcontroller platforms such as Arduino and Raspberry Pi, making it a go-to choice for hobbyists, engineers, and makers alike.

Key Features

• Dual Function: Includes both transmitter (MA40S4S) and receiver (MA40S4R) ultrasonic probes
• 40 kHz Operating Frequency: Ideal for accurate, stable distance sensing
• 20 Vp-p Drive Voltage: Delivers strong, consistent signal output
• Durable Construction: Built from plastic and metal for long-lasting reliability
• Compact & Versatile: Fits a wide range of DIY electronics, automation, and robotics applications
• Easy Integration: Compatible with common microcontroller development boards
• 2 Color Options: Choose the style that suits your build

Specifications

• Model: MA40S4R (Receiver) / MA40S4S (Transmitter)
• Frequency: 40 kHz
• Drive Voltage: 20 Vp-p
• Material: Plastic + Metal
• Application: Distance detection, proximity sensing, object detection, robotics

Who Is This For?

Whether you're a student working on a science project, a hobbyist building a smart device, or a professional prototyping an automation system, this ultrasonic sensor pair delivers the consistent performance you need. It also makes a great component gift for electronics enthusiasts.

Learn More About Ultrasonic Sensing Technology

For technical background on ultrasonic measurement and its applications in science and industry, visit the National Institute of Standards and Technology (NIST), a trusted authority on measurement science and standards.

Frequently Asked Questions

Q: What are the MA40S4R and MA40S4S ultrasonic probes used for?

A: The MA40S4R (receiver) and MA40S4S (transmitter) are 40 kHz ultrasonic probes used for non-contact distance detection, proximity sensing, and object detection in electronics, robotics, and automation projects.

Q: What material is this ultrasonic sensor made from?

A: This ultrasonic probe sensor is constructed from a combination of plastic and metal, ensuring a durable and reliable build suitable for repeated use in prototyping and finished electronic systems.

Q: Is this sensor compatible with Arduino or Raspberry Pi?

A: Yes. This 40 kHz ultrasonic sensor is compatible with popular microcontroller platforms including Arduino and Raspberry Pi, making it straightforward to integrate into a wide range of DIY and professional projects.

Q: How many sensors are included?

A: This listing is for 1 piece. Please select your preferred color option at checkout. Both transmitter and receiver variants are available — check product variant selection for details.