ALLOYSEED 0–40KPa Digital Barometric Pressure Sensor for Arduino
ALLOYSEED 0–40KPa Digital Barometric Pressure Sensor for Arduino
ALLOYSEED Digital Barometric Air Pressure Sensor Module for Arduino
Take your Arduino projects to the next level with the ALLOYSEED DC 3.3V–5V 0–40KPa Digital Barometric Air Pressure Sensor Module. Whether you're building a gas flow monitor, a liquid level controller, or a custom weather station, this compact, high-precision sensor delivers reliable, accurate digital pressure readings every time.
Made in Mainland China.
Key Features
- Wide Pressure Measurement Range: Measures pressure changes from 0 to 40 KPa, making it ideal for low-pressure monitoring applications such as gas flow sensing and liquid level detection.
- High-Precision AD Sampling: Equipped with a high-accuracy analog-to-digital sampling chip and a 5kΩ resistance bridge sensor for precise, consistent readings you can depend on.
- Dual Voltage Compatibility: Operates on both 3.3V and 5V DC power supplies, ensuring seamless compatibility with a wide range of microcontrollers and development boards including Arduino.
- Compact & Easy to Install: Measures just 19 × 18 × 11 mm — its miniaturized form factor integrates smoothly into tight enclosures and complex project builds.
- Low Power Consumption: Supports intermittent operating mode to minimize energy draw, making it an excellent fit for long-term continuous monitoring applications.
- 2.5mm Hose Connection: Attaches directly to a 2.5mm soft tube for flexible routing to air or liquid sources.
- Reliable & Stable Performance: Delivers accurate measurements across a variety of environmental conditions, ensuring dependable results in critical monitoring systems.
Specifications
| Operating Voltage | 3.3V – 5V DC |
| Pressure Range | 0 – 40 KPa |
| Connector | 2.5mm Soft Tube / Hose |
| Sensor Bridge | 5kΩ Resistance Bridge |
| Dimensions | 19 × 18 × 11 mm (0.74 × 0.70 × 0.43 in) |
| Color | Red PCB |
| Compatibility | Arduino and most 3.3V/5V microcontrollers |
| Battery | Not included / Not required |
| Country of Origin | Mainland China |
What's in the Box?
- 1 × Digital Barometric Air Pressure Sensor Module
Important Notes
- Actual color may vary slightly from photos due to monitor settings and lighting conditions.
- Please allow ±1–2 cm measuring deviation due to manual measurement.
Learn More
For guidance on working with electronic sensors and microcontroller-based systems, visit the National Institute of Standards and Technology (NIST) – Measurement Standards for resources on precise measurement best practices.
Frequently Asked Questions
Q: Is this digital barometric air pressure sensor module compatible with Arduino?
A: Yes! The ALLOYSEED 0–40KPa air pressure sensor module is designed to be fully compatible with Arduino and other 3.3V/5V microcontrollers. Simply connect it to your board's power supply and digital input pins to begin reading pressure data in your projects.
Q: What types of applications is this pressure sensor module best suited for?
A: This module is ideal for a wide range of low-pressure monitoring applications, including gas flow sensing, liquid level detection, water level controllers, DIY weather stations, and any Arduino or microcontroller project that requires accurate digital pressure measurement in the 0–40 KPa range.
Q: How do I connect the sensor to a fluid or air source?
A: The module features a standard 2.5mm port that accepts a soft rubber or silicone hose, making it easy to route to your air or liquid source without the need for special fittings. Ensure the hose is securely attached to avoid leaks that could affect measurement accuracy.
Q: Can this module operate on both 3.3V and 5V systems?
A: Yes. The sensor module supports an operating voltage range of 3.3V to 5V DC, so it works seamlessly with both 3.3V systems (such as ESP8266/ESP32 boards) and 5V systems (such as standard Arduino Uno boards).