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YF-S401 1 / 8 Inch Hall Effect Water Flow Sensor – 0.5–5L / min, DC 5–18V

Original price was: ₹420.00.Current price is: ₹195.00. Incl. GST

YF-S401 1/8 Inch Hall Effect Water Flow Sensor – 0.5–5L/min, DC 5–18V – sensors. ₹300 at Syntronix. Arduino & Raspberry Pi compatible. Free code library. Fast pan-India delivery from Bangalore.

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SKU: SYN-SEN-0192 Category: Tag:
Description

Description

The YF-S401 1/8 Inch Water Flow Sensor is a compact and efficient solution for measuring water flow in real time. Featuring a magnetic rotor and Hall Effect sensor, it outputs a digital NPN pulse signal proportional to flow rate, making it ideal for use in water heaters, beverage dispensers, and smart plumbing systems.

With a voltage range of DC 5–18V, high temperature resistance up to 120°C, and a durable POM construction, this sensor is built for both industrial and home automation applications. Its leak-proof design withstands up to 1.75MPa water pressure, ensuring reliability in demanding conditions.

Specifications:

  • Model: YF-S401

  • Port Size: 1/8 Inch (7mm)

  • Flow Range:
     - Ø2.0mm: 0.5 – 3 L/min
     - Ø3.5mm: 0.5 – 5 L/min

  • Voltage Range: DC 5 – 18V

  • Sensor Type: Hall Effect – NPN Pulse Output

  • High Level Output: > DC 4.7V

  • Low Level Output: < DC 0.5V

  • Material: POM

  • Max Water Temp: ≤120°C

  • Max Water Pressure: ≤1.75MPa

  • Leak Test: 1.7MPa for 1 min – no leakage or deformation

  • Applications: Water heaters, IoT flow control, filtration, irrigation

Additional information

Additional information

Weight

0.01 kg

Dimensions

5 × 5 × 5 cm

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Shipping & Delivery
hipping Overview Dispatch Time Within 1–2 business days from Bangalore Cutoff Time Orders placed before 3 PM IST are shipped same/next business day Courier Partners Delhivery, BlueDart, DTDC, India Speed Post Coverage Pan-India only. No international shipping. Tracking Tracking details sent to your registered email after dispatch Delivery Time Metro Cities 1–3 business days Other Locations 3–7 business days Delivery timelines are estimates and depend on the courier partner. Syntronix is not responsible for delays caused by third-party carriers.Shipping Charges Free Shipping On all orders above ₹499 Below ₹499 Nominal shipping fee calculated at checkout based on location Cash on Delivery (COD) Available on orders ₹500–₹3,000. A processing fee of ₹125 applies. All orders are shipped with a GST invoice as per Indian tax regulations. Please enter your GST details at checkout if required — GST details cannot be updated after order placement.Returns & Refunds Return Window 7 days from date of delivery Eligible Returns Defective or damaged products only Process Email info@syntronix.in with your order ID and photos of the product Refund Timeline 3–5 working days after return inspection and approval Products must be returned in original packaging with all accessories. Return shipping costs are borne by the customer unless the product is defective. Returns are not accepted for products damaged due to misuse, accident, or improper handling.Cancellations Cancellations can be requested before the order is shipped by emailing info@syntronix.in or via WhatsApp. Once an order has been shipped, cancellations cannot be processed.Damaged Parcels If your parcel appears damaged or tampered with at the time of delivery, please refuse to accept it and contact us immediately at info@syntronix.in with your order reference number. We will arrange a replacement at the earliest.Bulk & B2B Orders For institutional purchases, college lab orders, or bulk B2B enquiries, contact us directly at info@syntronix.in or via the WhatsApp button on the website.