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Front of cylindrical water pressure sensor with black cable and connector.-DFRobot product sku:SEN0257 image.
Front of black cable with connector and white label for Arduino water pressure sensor
Front of analog water pressure sensor compatible with Arduino for pump pressure measurement
Angled shot of a black cable with a metallic connector for Arduino water pressure sensor and pump pressure measurement.
Angled shot of black cable with metallic connector for Arduino water pressure sensor and pump pressure measurement.
Angled shot of black cable with metallic connector and red cap for Arduino water pressure sensor and water level detection
Front of Arduino water pressure sensor with label showing 'PRESSURE SENSOR'
Front of Arduino water pressure sensor showing pump pressure measurement and connection ports.

Gravity: Analog Water Pressure Sensor

$15.90
SKU: SEN0257
The water pressure sensor uses a 3-pin interface, supports 5V input, and outputs 0.5-4.5V. It's Arduino-compatible, suitable for smart home systems.
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IntroductionFeaturesSpecificationDocumentsShipping List Resource Review

Introduction

This is a water pressure sensor adopts DFRobot Gravity 3-pin interface. It supports standard 5V voltage input and 0.5~4.5V linear voltage output. It is compatible with multiple Arduino controllers.

Coordinate with a DFRobot Gravity IO Expansion Shield, the water pressure sensor can be plugged into an Arduino board, wiring-free. Put it with Solenoid Valve, Water Turbine Generator and other sensors, you can build a smart water control system. You may also check Liquid Sensor Selection Guide to get better familiar with our liquid sensor series.

Briefly speaking, this water pressure sensor is a stethoscope to a water pipe. It will help you to diagnose whether there is water, and how strong the water pressure is. It can be widely applied to smart home control systems (SCS), Internet of Things (IoT), and device detections.

Connection Diagram(Arduino)

Features

  • Support water pressure detection of living environmental water systems, such as houses, gardens, and farms.
  • Support water pressure detection of the outdoor environments, such as rivers, lakes, and the sea.
  • Support water pressure detection of tanks;
  • Support liquid level detection in special situation detection in specified liquid;

    • Specification

  • Medium: liquid/gas without corrosion
  • Wiring: Gravity-3Pin (Signal-VCC-GND)
  • Pressure Measurement Range: 0~1.6 Mpa
  • Input Voltage: +5 VDC
  • Output Voltage: 0.5~4.5 V
  • Measurement Accuracy: 0.5%~1%FS (0.5%, 0~55°C)
  • Threadably: G1/4
  • Adapter: G1/2 to G1/4
  • Waterproof level: IP68
  • Operating Temperature: -20~85°C
  • Response Time: <2.0 ms
  • Quiescent Current: 2.8 mA
  • Normal Operating Pressure: ≤2.0 Mpa
  • Damaged Pressure: ≥3.0Mpa
  • Service Life: 10’000’000 times
  • Line length: 1m

    • Documents

    Shipping List

  • Gravity: Analog Water Pressure Sensor x1
  • G1/2 to G1/4 Connector (mounted) x1

    • Resource

    AllProjectsBlogTutorialCourseMedia
    Gravity Liquid Sensor Selection Guide

    Blog Gravity Liquid Sensor Selection Guide

    DFRobot
    Dec 28, 2019

    Review

    KANATORN.Jindarak Jan 28, 2026

    I've used about 10 of these pressure sensors already, and I've never had any problems with them.

    KANATORN.Jindarak Jan 07, 2026

    Good quality, sheep, fast shipping

    hendra. Dec 08, 2025

    Good and best price nice website

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