---
product_id: 212137427
title: "AC Water Switch, G1/2 BSP Magnetic Sensor for Electric Water Heater, 1pc"
brand: "keenso"
price: "€ 16.77"
currency: EUR
in_stock: true
category: "Keenso"
url: https://www.desertcart.de/products/212137427-ac-water-switch-g1-2-bsp-magnetic-sensor-for-electric
store_origin: DE
region: Germany
---

# 220V AC power for instant activation Magnetic flow sensor for precise water control G1/2" BSP threaded pipe for easy installation AC Water Switch, G1/2 BSP Magnetic Sensor for Electric Water Heater, 1pc

**Brand:** keenso
**Price:** € 16.77
**Availability:** ✅ In Stock

## Summary

> 💧 Switch to smarter water heating — save energy, save time!

## Quick Answers

- **What is this?** AC Water Switch, G1/2 BSP Magnetic Sensor for Electric Water Heater, 1pc by keenso
- **How much does it cost?** € 16.77 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/212137427-ac-water-switch-g1-2-bsp-magnetic-sensor-for-electric)

## 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

- • **Built to Last:** Crafted from premium plastic materials designed to withstand temperatures from 1°C to 100°C without fail.
- • **Peace of Mind Warranty:** Backed by a 180-day guarantee, ensuring your investment is protected and supported.
- • **Effortless Energy Savings:** Automatically powers your water heater only when water flows, cutting unnecessary electricity use.
- • **Magnet-Powered Reliability:** Spring-free magnetic repulsion ensures a durable, scale-resistant sensor for long-lasting performance.
- • **Universal Fit & Flexibility:** Compatible with vertical or horizontal pipe setups via standard G1/2" BSP threading.

## Overview

The Keenso EFS-04P Water Switch is a 220V, 3A magnetic flow sensor designed for electric water heaters. Featuring a spring-free magnetic mechanism, it reliably detects water flow to activate heating only when needed, promoting energy efficiency. Its G1/2" BSP threaded design supports both vertical and horizontal installations, while durable plastic construction withstands temperatures from 1°C to 100°C. With a 180-day warranty, this sensor offers a dependable upgrade for modern water heating systems.

## Description

AC Water Switch, G1/2 BSP Magnetic Sensor for Electric Water Heater, 1pc | Magnet Repulsion Shut-Off, 3A Rated Current, Anti-Scale Internal Design, Vertical or Horizontal Mounting Control : desertcart.co.uk: Business, Industry & Science

## Features

- Magnet Repulsion Design: Uses magnetic repulsion instead of springs for reliable switching, reduces scale build-up for cleaner water .
- 3A Specification: Rated at AC 3A, compatible with electric water heaters to help usage.
- G1/2 BSP Pipe Thread: Fits standard G1/2 BSP pipe connections, measures 2cm diameter for straightforward mounting.
- Automatic Control: Connects circuit when water flows through inlet, heater stops when stops, essential for water heaters.
- Durable Construction: Made from high-quality plastic, built for long-term use with consistent performance in daily operation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07TYWF668 |
| Best Sellers Rank | 47,598 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 31 in Flow Sensors |
| Brand | Keenso |
| Circuit Type | 1-way |
| Colour | Black |
| Compatible Devices | Electric Water Heater |
| Connectivity Protocol | Wi-Fi |
| Connector Type | Threaded |
| Contact Material | Plastic |
| Contact Type | Normally Open |
| Control Method | App |
| Controller Type | Mechanical knob |
| Country Of Origin | China |
| Current Rating | 3 Amps |
| Customer Reviews | 3.8 3.8 out of 5 stars (13) |
| Lower Temperature Rating | 1 Degrees Celsius |
| Manufacturer | Keenso |
| Manufacturer Part Number | Keenso29bgawvdof |
| Material | Plastic |
| Model Number | EFS-04P |
| Mounting Type | Wall Mount |
| Number of Items | 1 |
| Number of Positions | 1 |
| Operating Voltage | 220 Volts |
| Operation Mode | ON-OFF |
| Switch Type | Flow Switch |
| Terminal | Screw |
| UPC | 707300318070 |
| Unit Count | 1.0 count |
| Upper Temperature Rating | 100 Degrees Celsius |
| 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

![AC Water Switch, G1/2 BSP Magnetic Sensor for Electric Water Heater, 1pc - Image 1](https://m.media-amazon.com/images/I/41WmeGqFcfL.jpg)

## 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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**Shop now:** [https://www.desertcart.de/products/212137427-ac-water-switch-g1-2-bsp-magnetic-sensor-for-electric](https://www.desertcart.de/products/212137427-ac-water-switch-g1-2-bsp-magnetic-sensor-for-electric)

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-10-30*