YF-S201 Water Flow Sensor
- Working Voltage: 5V–18V DC (minimum tested working voltage 4.5V)
- Maximum Current Draw: 15mA @ 5V
- Working Flow Rate: 1–30 L/min
- Maximum Water Pressure: 2.0 MPa
- Pulse Output Formula:
Frequency (Hz) = 7.5 × Flow Rate (L/min) - Output Type: Digital pulse output (Hall-effect)
- Connection Type: 3-wire (VCC, GND, Signal)
SKU:
SE-149
Categories: Flow Sensors, Sensor Modules
Tags: Flow Detection, Flow Measurement, Flow Sensor, Water Flow Sensor, YF-S201
Description
- The YF-S201-0.5 Water Flow Sensor uses a Hall-effect turbine system to measure water flow and outputs a digital pulse stream, enabling easy interfacing with microcontrollers such as Arduino, ESP32, Raspberry Pi, and PLCs.
- Operates over a wide voltage range (5–18VDC), making it suitable for diverse industrial and hobbyist systems.
- Constructed using durable plastic, corrosion-resistant materials, and sealed with an O-ring to ensure long service life even in continuous-flow applications.
- Provides accurate, real-time flow measurement, allowing users to track water consumption, manage flow-based automation, and detect abnormal usage.
- Simple installation with standard ½-inch pipe threads, ideal for integration in domestic and industrial pipelines.
- Delivers 450 pulses per liter, enabling precise calculations via software.
- Commonly used in environments needing monitoring, protection, or automation, such as water control systems, filtration units, and smart homes.
PACKAGE INCLUDES:
- 1 × YF-S201 Water Flow Meter Sensor (1–30 L/min) – Black
Additional information
| Weight | 75 g |
|---|
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Applications
- Irrigation and agriculture systems
- Aquaculture and aquaponics
- Water treatment and purification plants
- Industrial manufacturing lines
- Smart home water management
- Cooling and HVAC systems
- Fire suppression systems
- Swimming pool monitoring
- Water distribution measurement
- Beverage and liquid dispensing systems
TECHNICAL SPECIFICATIONS
| Parameter | Value |
| Working Flow Rate | 1–30 L/min |
| Operating Temperature | -25°C to +80°C |
| Operating Humidity | 35% – 80% RH |
| Accuracy | ±10% |
| Pulses per Liter | 450 |
| Output Duty Cycle | 50% ± 10% |
| Output Rise Time | 0.04 µs |
| Output Fall Time | 0.18 µs |
| Max Water Pressure | 2.0 MPa |
| Outer Diameter | 20 mm |
| Intake Diameter | 11 mm |
| Outlet Diameter | 11 mm |
| Length | 62.5 mm |
| Width | 36 mm |
| Height | 35 mm |
| Weight | 50 g |
| Shipping Weight | 0.089 kg |
| Shipping Dimensions | 9 × 6 × 6 cm |

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