---
product_id: 212137427
title: "Water Switch, 1pc AC 220V 3A Plastic Magnetic Water Switch Vertical/Horizontal Water Control Sensor with G1/2\" (BSP) Pipe for Electric Water Heater"
brand: "keenso"
price: "€ 21.25"
currency: EUR
in_stock: true
reviews_count: 3
category: "Keenso"
url: https://www.desertcart.nl/products/212137427-water-switch-1pc-ac-220v-3a-plastic-magnetic-water-switch
store_origin: NL
region: Netherlands
---

# 220V AC power compatibility G1/2" BSP pipe thread for universal fit Magnetic repulsion tech for durability Water Switch, 1pc AC 220V 3A Plastic Magnetic Water Switch Vertical/Horizontal Water Control Sensor with G1/2" (BSP) Pipe for Electric Water Heater

**Brand:** keenso
**Price:** € 21.25
**Availability:** ✅ In Stock

## Summary

> 💧 Power your flow, save your energy — switch smart, live smarter!

## Quick Answers

- **What is this?** Water Switch, 1pc AC 220V 3A Plastic Magnetic Water Switch Vertical/Horizontal Water Control Sensor with G1/2" (BSP) Pipe for Electric Water Heater by keenso
- **How much does it cost?** € 21.25 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/212137427-water-switch-1pc-ac-220v-3a-plastic-magnetic-water-switch)

## Best For

- keenso enthusiasts

## Why This Product

- Trusted keenso brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Lightweight:** Weighing just 20g, it integrates seamlessly without bulk or hassle.
- • **Peace of Mind Warranty:** Backed by 180 days warranty, ensuring dependable performance and support.
- • **Effortless Energy Savings:** Activates water heater only when water flows, cutting unnecessary power use.
- • **Durable Magnetic Mechanism:** Spring-free magnetic repulsion ensures reliable switching and reduces scaling for longer life.
- • **Universal Fit & Flexibility:** G1/2" BSP threading fits standard pipes, install vertically or horizontally with ease.

## Overview

The Keenso EFS-04P Water Switch is a 220V, 3A magnetic water flow sensor designed for electric water heaters. Featuring a spring-free magnetic repulsion mechanism, it reliably activates heating only when water flows, promoting energy efficiency and reducing scale buildup. Its G1/2" BSP pipe thread ensures easy installation in vertical or horizontal orientations. Lightweight and durable, it comes with a 180-day warranty for trusted performance.

## Description

Water Switch, 1pc AC 220V 3A Plastic Magnetic Water Switch Vertical/Horizontal Water Control Sensor with G1/2" (BSP) Pipe for Electric Water Heater : desertcart.co.uk: Business, Industry & Science

Review: excellent & great value - excellent & great value
Review: Not as specified - I used this device to switch a bathroom extractor fan on. Contacts keep sticking leading to continuous running of the fan. Giving the benefit of doubt I replaced my old fan and bought a replacement switch and got the same result. Contacts can be freed by giving the device body a sharp tap , so the contacts are sticking under load conditions.The switch on current of the fan is around 40mA (far less than the specified I max of 3A) Conclusion not as specified.

## Features

- Excellent Performance: This 220V water flow switch adopts magnet repulsion instead of springs, which is safe and reliable. It can make water is not easy to scale, which is conducive to health. Pipe thread size: G1/2" (BSP); diameter: 2cm.
- Scope of Application: This 220V 10W water flow switch can be used in the instantaneous electric water heater, which can save electricity power.
- Premium Quality: This brand new water flow switch is made of high quality material, which is sturdy and durable in use. And it can be used for a long time, which has long service life and good reliability.
- Function Introduction: When there is a certain water flow through inlet, electric circuits is connected and water heater begin to heat. When the water flow stops, the water heater stops working, which is a very important part in the instant water heater.
- Guarantee: Our EFS-04P water flow switch has 180 days warranty, if you have any question about this product, please feel free to contact us, we will try our best to help you solve your problem.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07TYWF668 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 79,418 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 79 in Flow Sensors |
| Customer Reviews | 3.5 3.5 out of 5 stars (11) |
| Date First Available | 4 July 2019 |
| Item Package Quantity | 1 |
| Item Weight | 20 g |
| Item model number | EFS-04P |
| Manufacturer | Keenso |
| Part number | Keenso29bgawvdof |
| Plug profile | Wall Mount |
| Switch Type | 1-way |
| Wattage | 10 watts |

## Product Details

- **Brand:** Keenso
- **Circuit type:** 1-way
- **Connector type:** Threaded
- **Contact type:** Normally Open
- **Current rating:** 3 Amps
- **Material:** Plastic
- **Operating voltage:** 220 Volts
- **Operation mode:** ON-OFF
- **Switch type:** Flow Switch
- **Terminal:** Screw

## Images

![Water Switch, 1pc AC 220V 3A Plastic Magnetic Water Switch Vertical/Horizontal Water Control Sensor with G1/2" (BSP) Pipe for Electric Water Heater - Image 1](https://m.media-amazon.com/images/I/41WmeGqFcfL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ excellent & great value
*by G***. on 15 January 2026*

excellent & great value

### ⭐ Not as specified
*by T***E on 22 July 2025*

I used this device to switch a bathroom extractor fan on. Contacts keep sticking leading to continuous running of the fan. Giving the benefit of doubt I replaced my old fan and bought a replacement switch and got the same result. Contacts can be freed by giving the device body a sharp tap , so the contacts are sticking under load conditions.The switch on current of the fan is around 40mA (far less than the specified I max of 3A) Conclusion not as specified.

### ⭐ Worked fine to 2 weeks
*by N***D on 29 November 2024*

Worked well for about 2 weeks then it became slow to turn on and off. I was using it on the hot water flow to an under sink heater to turn a pressure booster on and off. This was wired via a relay to ensure the switching current was low.

## Frequently Bought Together

- Water Flow Switch, 1pc AC 220V 3A Plastic Magnetic Water Flow Switch Vertical/Horizontal Water Flow Control Sensor with G1/2" (BSP) Pipe for Electric Water Heater
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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-11*