YF-S201 Water Flow Rate Sensor (1–30 L/min, G1/2 Thread)
Prices updated: 12 Oct 2026
Compare prices
| Store | product | Price | View in store |
|---|---|---|---|
 Makers ElectronicsCheapest | Water Flow Sensor YF-S201 | 190 EGP | View in store |
 RAM Electronics | YF-S201 G1/2" Water Flow Meter Sensor | 200 EGP | View in store |
 UGE | YFS201 Water Flow Rate Sensor 1-30 L-min YF-S201 | 250 EGP | View in store |
 Future Electronics | Water Flow Rate Sensor YF-S201 | 260 EGP | View in store |
Price history
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Lowest price recorded: 190 EGP
About this product
The YF-S201 is a Hall-effect water flow sensor with a G1/2 threaded body that measures flow from 1 to 30 litres per minute. It outputs a pulse signal whose frequency is proportional to the flow rate, making it suitable for Arduino and ESP32 projects that monitor water usage or flow.
Specifications
- Operating voltage
- DC 5–18 V / من 5 إلى 18 فولت تيار مستمر
- Flow range
- 1–30 L/min / من 1 إلى 30 لتر/دقيقة
- Pulses per litre
- 450 / 450
- Output frequency formula
- F = 7.5 × Q (Q in L/min) / F = 7.5 × Q (Q باللتر/دقيقة)
- Thread
- G1/2 inch / G1/2 بوصة
- Wiring
- Red +, Black –, Yellow pulse / أحمر +، أسود –، أصفر للنبضات
- Weight
- 55 g / 55 جرام
- Size
- 62.5 × 36 × 35 mm / 62.5 × 36 × 35 مم
Frequently asked questions
What is the price of YF-S201 Water Flow Rate Sensor (1–30 L/min, G1/2 Thread) in Egypt?
YF-S201 Water Flow Rate Sensor (1–30 L/min, G1/2 Thread) currently costs between 190 and 260 EGP across 4 offers in Egypt.
Where can I buy YF-S201 Water Flow Rate Sensor (1–30 L/min, G1/2 Thread) in Egypt?
YF-S201 Water Flow Rate Sensor (1–30 L/min, G1/2 Thread) is available from Makers Electronics, RAM Electronics, UGE, and Future Electronics. Compare the offers above to find the best price.
How do I wire the YF-S201 to an Arduino or ESP32?
Power the sensor from 5 V, connect the black wire to GND, and connect the yellow pulse wire to an interrupt-capable digital pin. Avoid higher supply voltages, because the pulse line can exceed the logic level of a 3.3 V or 5 V board.
How do I convert the pulses into litres?
The sensor outputs 450 pulses per litre. Count the pulses over a time window and divide by 450 to get litres. For the flow rate in L/min, divide the output frequency in Hz by 7.5.
