YF-S401 Hall Effect Water Flow Sensor for Arduino, ESP32 & Raspberry Pi
₹249.00
The YF-S401 Water Flow Sensor is a compact Hall-effect flow meter designed to measure the flow rate and total volume of clean water. It generates pulse signals proportional to water flow, making it ideal for Arduino, ESP32, Raspberry Pi, automation, coffee machines, water dispensers, and DIY electronics projects
Description
The YF-S401 Water Flow Sensor is a high-quality liquid flow measurement sensor featuring a precision turbine rotor and Hall-effect sensing technology. As water passes through the sensor, the internal rotor spins and produces digital pulse outputs proportional to the flow rate. These pulses can be counted by a microcontroller to calculate both instantaneous flow and total water consumption.
Its compact size and low flow measurement range make it ideal for applications such as water dispensers, coffee machines, irrigation systems, laboratory equipment, cooling systems, and smart water monitoring. Compatible with Arduino, ESP32, Raspberry Pi, STM32, PIC, and other development boards, the YF-S401 offers stable performance, low power consumption, and easy installation.
Features
- High-quality Hall-effect flow sensor
- Measures clean water flow accurately
- Digital pulse output
- Compact and lightweight design
- Low power consumption
- Fast response time
- Waterproof sensor body
- Durable plastic construction
- Easy to interface with microcontrollers
- Stable and reliable performance
- Long service life
- Simple 3-wire connection
Specifications
| Specification | Value |
|---|---|
| Model | YF-S401 |
| Sensor Type | Hall Effect Water Flow Sensor |
| Operating Voltage | DC 3.5V–24V |
| Recommended Voltage | DC 5V |
| Operating Current | ≤15mA |
| Flow Range | 0.3–6 L/min |
| Output Signal | Digital Pulse |
| Accuracy | ±5% (Typical) |
| Operating Temperature | -20°C to +80°C |
| Liquid Temperature | Up to 80°C |
| Working Pressure | ≤1.75 MPa |
| Insulation Resistance | >100 MΩ |
| Body Material | Engineering Plastic |
| Weight | Approx. 30g |
Pin Configuration
| Wire Color | Function |
|---|---|
| Red | VCC (+3.5V to +24V) |
| Black | GND |
| Yellow/Green | Pulse Signal Output |
Applications
- Water Flow Monitoring
- Smart Water Meters
- Coffee Machines
- Water Dispensers
- RO Water Purifiers
- Automatic Irrigation Systems
- Liquid Dispensing Machines
- Industrial Automation
- Home Automation
- IoT Projects
- Arduino Projects
- ESP32 Projects
- Raspberry Pi Projects
- DIY Electronics
- Cooling Water Monitoring
Package Includes
- 1 × YF-S401 Water Flow Sensor
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