YF-S401 Water Flow Sensor 0.3-6 L/min G1/8 Thread
Prices updated: 13 Oct 2026
Compare prices
| Store | product | Price | View in store |
|---|---|---|---|
 Microohm | Water Flow Sensor (Sea) YFS401 Flowmeter 0.3-6L/min 3.5mm White | 240 EGP275 | View in store |
Price history
Lowest daily price, last 90 days
Lowest price recorded: 240 EGP
About this product
YF-S401 is a water flow sensor with a G1/8 inch thread that measures liquid flow in the 0.3 to 6 L/min range. It runs from 5 to 12 V DC and draws around 15 mA, making it straightforward to integrate with microcontrollers. Its pulse output lets the controller count flow over time for water dispensers, irrigation and fluid control projects.
Specifications
- Flow range
- 0.3-6 L/min
- Operating voltage
- 5-12 VDC
- Operating current
- 15 mA
- Insulation resistance
- >100 MΩ
- Thread size
- G1/8 inch
Frequently asked questions
What is the price of YF-S401 Water Flow Sensor 0.3-6 L/min G1/8 Thread in Egypt?
YF-S401 Water Flow Sensor 0.3-6 L/min G1/8 Thread currently costs 240 EGP in Egypt.
Where can I buy YF-S401 Water Flow Sensor 0.3-6 L/min G1/8 Thread in Egypt?
YF-S401 Water Flow Sensor 0.3-6 L/min G1/8 Thread is available from Microohm. Compare the offers above to find the best price.
How do I wire the YF-S401 to a microcontroller?
Typically red is power (5-12 V), black is ground and yellow is the pulse signal. Connect the signal to a pin that supports interrupts, and confirm the wire colours with the seller's sheet, since wiring can vary between units.
How do I convert pulses into litres?
Count the pulses over a time window and divide by the sensor's pulses-per-litre calibration factor. Take this factor from the datasheet or calibrate it by measuring a known volume of water.
