YF-S201 Water Flow Sensor 1–30 L/min Black - Hall Effect Pulse Output
The YF-S201 is a hall-effect-based inline water flow sensor compatible with 5V–18V DC systems, including Arduino and Raspberry Pi platforms. It provides a pulse output for measuring flow rates from 1 to 30 liters per minute, suitable for monitoring liquid consumption in various applications.
Features
- Inline Hall-effect flow sensor with 1–30 L/min measurement range.
- Operates from 5V to 18V DC with low 15mA current draw.
- Outputs a pulse signal (~450 pulses per liter) for easy flow rate calculation.
- Rated for water pressures up to 1.75 MPa and temperatures from -20°C to 80°C.
- Compact design with 20mm outer diameter for easy integration into water lines.
Out of stock
The YF-S201 water flow sensor utilizes a sealed magnetic hall effect sensor coupled with an internal pinwheel rotor. As fluid passes through the sensor body, the rotor spins, and the hall sensor generates a corresponding electrical pulse for each revolution. This pulse output provides a direct, non-contact method for flow measurement, keeping the electronics isolated from the water path.
Designed for basic flow monitoring, the sensor offers an accuracy of approximately ±10% and requires system-specific calibration for higher precision applications. Its robust construction supports a wide operating temperature range and withstands pressures up to 1.75 MPa, making it suitable for integration into DIY projects, irrigation systems, and simple industrial monitoring setups.
Additional Information
| Weight | 0.05 kg |
|---|---|
| Dimensions | 6.25 × 3.6 cm |













