---
product_id: 164485342
title: "Liquid Level Sensor, DC 0-110V Large Size Stainless Steel Double Float Ball Switch Water Level Controller Sensor Switch for Water Tank,Pool,Sink,Fish Tank,etc(400mm)"
brand: "focket"
price: "NT$1607"
currency: TWD
in_stock: true
url: https://www.desertcart.tw/products/164485342-liquid-level-sensor-dc-0-110v-large-size-stainless-steel
store_origin: TW
region: Taiwan
---

# Adjustable float length (300-500mm) Double float switch with 10mm action range High sensitivity reed switch Liquid Level Sensor, DC 0-110V Large Size Stainless Steel Double Float Ball Switch Water Level Controller Sensor Switch for Water Tank,Pool,Sink,Fish Tank,etc(400mm)

**Brand:** focket
**Price:** NT$1607
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead of the flow with precision water level sensing!

## Quick Answers

- **What is this?** Liquid Level Sensor, DC 0-110V Large Size Stainless Steel Double Float Ball Switch Water Level Controller Sensor Switch for Water Tank,Pool,Sink,Fish Tank,etc(400mm) by focket
- **How much does it cost?** NT$1607 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/164485342-liquid-level-sensor-dc-0-110v-large-size-stainless-steel)

## Best For

- focket enthusiasts

## Why This Product

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

## Key Features

- • **Dual Float Design:** Double float mechanism with a 10mm action range for accurate high and low water level management.
- • **Versatile Application:** Ideal for water tanks, pools, sinks, and fish tanks—engineered for professional-grade water monitoring.
- • **Plug & Play Integration:** Tabletop mount design with contact sensor technology; easily pairs with relays for seamless automation.
- • **Precision Water Control:** Ultra-sensitive reed switch ensures instant and reliable water level detection.
- • **Customizable Sensing Length:** Choose from 300mm, 400mm, or 500mm floats to perfectly fit your tank size.

## Overview

The Liquid Level Sensor by Focket is a stainless steel, double float ball switch designed for precise water level control in tanks, pools, and sinks. Featuring a highly sensitive reed switch and adjustable float lengths (300-500mm), it offers reliable detection with a 10mm action range. Its tabletop mount and contact sensor technology make it easy to integrate with automation systems, ensuring professional-grade water management for your space.

## Description

Sponsored Ad – Liquid Level Sensor, DC 0-110V Large Size Stainless Steel Double Float Ball Switch Water Level Controller Sensor Switch for Water Tank,Pool,Sink,Fish Tank,etc(400mm)

## Features

- ❥❥❥【HIGHLY SENSITIVITY】☛☛☛ The contacts inside are made of a reed switch with very high sensitivity. Meanwhile, there are optional float 300mm, float 400mm, float 500mm.
- ❥❥❥【ACTION RANGE】☛☛☛ The action range of the two floats of the double float switch is 10mm. To control the range, you can use two float switch combinations to make a large stroke.
- ❥❥❥【WORKING PRINCIPLE】☛☛☛ The normal water intake is the following float switch to start, the float switch does stop work. And, the drain is activated by the float switch and the lower float switch stops working.
- ❥❥❥【NOTE】☛☛☛ The float switch cannot directly control solenoid valves or high-power relays, ac contactors, etc. At the same time, you should add a small relay to transition.
- ❥❥❥【100% WARRANTY】☛☛☛ We promises every customer a shopping satisfaction, feel to reach us if you have any questions about your purchase. We will give you a professional and detailed reply within 24 hours. Click to buy now!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Mounting type | Tabletop Mount |
| Sensor technology | Contact Sensor |
| UPC | 719855363726 071985536372 |
| Manufacturer | Focket |
| Part number | Focketqrzfhpx321-02 |
| Item Weight | 100 g |
| Product Dimensions | 1 x 1 x 1 cm; 100 g |
| Item model number | Focketqrzfhpx321-02 |
| Item Package Quantity | 1 |
| Batteries included? | No |
| Batteries Required? | No |

## Product Details

- **Colour:** Silver
- **Brand:** Focket
- **Power source:** DC Powered
- **Voltage:** 110 Volts
- **Control method:** Touch

## Images

![Liquid Level Sensor, DC 0-110V Large Size Stainless Steel Double Float Ball Switch Water Level Controller Sensor Switch for Water Tank,Pool,Sink,Fish Tank,etc(400mm) - Image 1](https://m.media-amazon.com/images/I/41rF1cbANPL.jpg)

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.tw/products/164485342-liquid-level-sensor-dc-0-110v-large-size-stainless-steel](https://www.desertcart.tw/products/164485342-liquid-level-sensor-dc-0-110v-large-size-stainless-steel)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-02-10*