Description

ZJ-S201C G1/2 Hall Effect Water Flow Sensor

The ZJ-S201C Water Flow Sensor is a reliable Hall Effect flow meter designed for precise water flow monitoring in automation systems, embedded electronics, and smart control applications. Featuring a G1/2-inch threaded connection and a measuring range of 1–25L/min, it provides stable pulse output for accurate flow detection while maintaining low power consumption and long-term reliability.

Designed for engineers, OEM manufacturers, and makers, the ZJ-S201C integrates easily with Arduino, ESP32, Raspberry Pi, STM32, and PLC controllers. Its durable nylon and PC housing offers excellent mechanical strength, making it suitable for continuous operation in water dispensers, coffee machines, water purification systems, agricultural irrigation, and industrial liquid control.

Product Highlights

Accurate Hall Effect Measurement

The built-in Hall sensor generates stable pulse signals proportional to water flow, allowing reliable digital monitoring and precise software calibration.

Wide Operating Voltage

Supporting DC 3.5V–24V, the sensor is compatible with most embedded control platforms and industrial electronic systems.

Durable Construction

Manufactured with high-quality engineering plastic, the sensor offers excellent wear resistance, corrosion resistance, and long service life in clean water applications.

Easy Installation

The standard G1/2 threaded interface enables quick installation into most water pipelines without complicated modifications.

Typical Applications

The ZJ-S201C is suitable for a wide variety of residential, commercial, and industrial projects, including:

• Smart water monitoring systems
• Water dispensers
• Coffee and beverage machines
• Water purification equipment
• Automatic irrigation systems
• Liquid dosing equipment
• Industrial automation
• Arduino and ESP32 development projects
• Raspberry Pi monitoring systems
• Laboratory flow measurement

Buying Guide

When selecting a water flow sensor, always consider the required flow range, operating pressure, supply voltage, and installation thread size. The ZJ-S201C is an excellent choice for applications requiring stable measurement between 1–25L/min. For lower flow applications, choosing a dedicated low-flow sensor may provide even greater measurement accuracy.

To better understand installation and pulse signal calibration, we recommend reviewing a practical wiring tutorial before integrating the sensor into your project. If you are comparing different flow ranges, you can also explore our complete collection of water flow sensors to select the most suitable model for your application.

Technical Specifications

Package Includes

• 1 × ZJ-S201C Water Flow Sensor

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Learn More

Looking for a different flow range? Explore our complete Water Flow Sensor Collection to find the right model for your project.

Need help with installation or programming? A practical YouTube tutorial from experienced makers is available below, covering wiring, testing, and calibration step by step.

https://www.youtube.com/watch?v=WOILXU58L3o

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FAQ

Q1: Is the ZJ-S201C compatible with Arduino?

Yes. The pulse output can be easily connected to Arduino, ESP32, Raspberry Pi, STM32, and other popular microcontrollers for real-time flow monitoring.

Q2: Can this ZJ-S201C Water Flow Sensor measure hot water?

Yes. The sensor supports liquid temperatures from -20°C to 100°C, making it suitable for many hot water applications within the specified operating conditions.

Q3: Does the sensor require calibration?

Although the factory calibration provides excellent accuracy, software calibration is recommended after installation to achieve the best performance in your specific system.