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Water Flow Sensor YF-S402B 5-24V Flowmeter 0.3-6L/Min

Reference RBD-2978

YF-S402B water flow sensor with 0.3–6L/min measurement range
Digital pulse output (0–100Hz) proportional to flow rate
Wide operating voltage: 5–24V DC, low power consumption
1/4 inch (6.5mm) inlet/outlet with stainless steel axis for durability
Leak-proof sealing ring for reliable and long-lasting use
Ideal for water heaters, dispensers, purifiers, and automation systems

Description
Product Details

Description

The YF-S402B Water Flow Sensor is a compact and reliable flowmeter designed to measure liquid flow between 0.3 and 6 liters per minute. Operating on a DC 5–24V supply, it produces a digital pulse output (0–100Hz) proportional to the flow rate, making it easy to interface with microcontrollers such as Arduino, ESP32, and Raspberry Pi. Built with a stainless steel axis for wear resistance and a sealing ring to prevent leaks, this sensor ensures long-term stability. Its lightweight and easy-to-install design makes it ideal for water heaters, automatic dispensers, purifiers, vending systems, and smart automation projects. Featured By RoboticsBD.

Product Images are shown for illustrative purposes only and may differ from the actual product.

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Features:

Accurate Measurement – Flow range from 0.3 to 6L/min.
Digital Pulse Output – Frequency signal (0–100Hz) proportional to flow.
Wide Voltage Compatibility – Works with 5–24V DC.
Durable Build – Stainless steel shaft ensures abrasion resistance.
Leak-Proof Design – Integrated sealing ring prevents water leakage.
Compact & Lightweight – Easy to install in various systems.
RoHS Compliant – Safe and environmentally friendly design.

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Applications:

Water Heaters – Monitor flow for heating efficiency.
Automatic Water Dispensers – Ensure accurate dispensing volumes.
Water Purifiers – Track and regulate flow during filtration.
POS Beverage Systems – Flow monitoring for vending and dispensing machines.
DIY & IoT Projects – Smart home and automation solutions.

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General Specifications
Model	YF-S402B
Flow Range	0.3 – 6 L/min
Input/Output Diameter	6.5mm (1/4 inch)
Working Voltage Range	5–24V DC
Minimum Rated Voltage	5V DC
Max. Working Current	15mA (DC 5V)
Load Capability	≤10mA (DC 5V)
Output Signal	Digital pulse (0–100Hz)
Shaft Material	Stainless steel
Sealing	Leak-proof ring
Standard Compliance	RoHS
Shipment Weight	0.0739 kg
Shipment Dimensions	25 × 11 × 5 cm

Please allow 5% measuring deviation due to manual measurement.

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Package Includes:

1 x Water Flow Sensor YF-S402B 5-24V Flowmeter 0.3-6L/Min

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Product Details

Reference RBD-2978

In stock 18 Items

Specific References

EAN13: 2978

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