---
product_id: 44413673
title: "6 Pieces Black Water Level Sensor Aquarium Tank Side Mounted Horizontal Liquid Float Switch"
brand: "anndason"
price: "₪94"
currency: ILS
in_stock: true
reviews_count: 9
category: "Anndason"
url: https://www.desertcart.co.il/products/44413673-6-pieces-black-water-level-sensor-aquarium-tank-side-mounted
store_origin: IL
region: Israel
---

# Max Switching Voltage 100V DC Compact 8.8cm length Operates -10°C to +85°C 6 Pieces Black Water Level Sensor Aquarium Tank Side Mounted Horizontal Liquid Float Switch

**Brand:** anndason
**Price:** ₪94
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead of the wave with smart, reliable water level sensing!

## Quick Answers

- **What is this?** 6 Pieces Black Water Level Sensor Aquarium Tank Side Mounted Horizontal Liquid Float Switch by anndason
- **How much does it cost?** ₪94 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/44413673-6-pieces-black-water-level-sensor-aquarium-tank-side-mounted)

## Best For

- anndason enthusiasts

## Why This Product

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

## Key Features

- • **Durable Build:** Made with polypropylene float ball and body for long-lasting corrosion resistance.
- • **Versatile Installation:** Side-mounted horizontal float switch with easy invertible float for NO/NC operation.
- • **Robust Electrical Specs:** Handles up to 10W power and 0.5A current—perfect for low-power sensor integration.
- • **Precision Liquid Level Detection:** Accurately senses water levels to automate your aquarium or hydroponic system.
- • **Plug & Play with Microcontrollers:** Ideal for Arduino and DIY projects to create smart water management systems.

## Overview

This 6-piece set of black side-mounted horizontal float switches offers precise liquid level detection with a compact 8.8cm design. Rated for up to 100V DC and operating in temperatures from -10°C to 85°C, these polypropylene sensors are perfect for aquariums, hydroponics, and other low-power water management systems. Easily integrated with Arduino or similar controllers, they enable automated pump or alarm activation, ensuring you never miss a critical water level change.

## Description

Material: Plastic Color :Black Features: 1.The float switch is a device used to sense the level of liquid within a tank. 2.The switch may actuate a pump, an indicator, an alarm, or other device. 3.It can be easily converted from normally open to normally close by invertin the float. Please Note: because the current that the switch can carry is much little(0.5A), you must use a relay or contactor when it is connected by a load, relay and contactor are not included here. Package Content : 6 x Water Level Sensor

Review: Works great - if you use it correctly - Works great with Arduino to control nutrient solution levels in hydroponic system. digitalRead(A0); returns "1" or "0." For my application, as sensor falls, a "1" is sent to the Arduino, which charges a DC-DC relay to activate normally closed solenoid valve until signal reads "0" again. I was hesitant to order after reading a lot of the reviews that insisted they go out after a short while, until I more closely examined the reviews. You cannot wire these directly between a source and a load (over about 5v) or they will predictably burn out! They are sensors, not switches, and as such must be "read" by another device that is then able to act upon it. As at least one other reviewer has noted, Arduino is a simple and safe platform for reading the signal and causing some other action based on the state of the sensor. If you need more info, Youtube it - "Arduino float switch"
Review: Works well but the photos are misleading for the install - The sensors themselves work great so far and seem reliable. There are no instructions on how to properly install this so I had to dig around and look at other similar products and installation photos to figure it out. The photos show the silicone gasket backwards from what actually works. The flange goes on the inside, through the hole, then the nylon washer goes on, then the nut. These create a watertight seal on both sides.

## Features

- Color : Black;Net Weight : 24g;Package Content : 6 x Water Level Sensor
- Max Contact Rating : 10W;Max Switching Voltage : 100V DC
- Max Switching Current : 0.5A;Max Breakdown Voltage : 220V DC;Max Carry Current : 1.0A;Max Contact Resistance : 100m Ohm
- Temperature Rating : -10 ~ +85 C;Float Ball Material : P.P;Float Body Material : P.P;Float Ball Size(Approx) : 2.35 x 1.7cm (L*D)
- Thread Dia(Approx) : 1.54cm / 0.6";Hex Head Size(Approx) : 2.5cm / 1";Body Total Length : 8.8cm / 3.5";Cable Length : 40cm / 15.8"

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071ZG4Y34 |
| Best Sellers Rank | #84,585 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #16 in Liquid Level Sensors |
| Date First Available | May 24, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 5.3 ounces |
| Item model number | 43237-2 |
| Manufacturer | Anndason |
| Product Dimensions | 3.3 x 0.6 x 3.3 inches |

## Images

![6 Pieces Black Water Level Sensor Aquarium Tank Side Mounted Horizontal Liquid Float Switch - Image 1](https://m.media-amazon.com/images/I/31G9GY75PtL.jpg)
![6 Pieces Black Water Level Sensor Aquarium Tank Side Mounted Horizontal Liquid Float Switch - Image 2](https://m.media-amazon.com/images/I/31PiTmbNpOL.jpg)
![6 Pieces Black Water Level Sensor Aquarium Tank Side Mounted Horizontal Liquid Float Switch - Image 3](https://m.media-amazon.com/images/I/41uhY3JTHCL.jpg)
![6 Pieces Black Water Level Sensor Aquarium Tank Side Mounted Horizontal Liquid Float Switch - Image 4](https://m.media-amazon.com/images/I/51B6CYrjyuL.jpg)
![6 Pieces Black Water Level Sensor Aquarium Tank Side Mounted Horizontal Liquid Float Switch - Image 5](https://m.media-amazon.com/images/I/612cqfXCBhL.jpg)

## Questions & Answers

**Q: What is the diameter of the white-colored ring? I need to know what size hole to drill.**
A: The diameter of the threaded portion that is a part of the sensor is 16mm (<5/8"). The white soft plastic ring you refer to is 18mm diameter (<3/4"). The flange on that white plastic ring is 26mm (~1 1/8") diameter. Hope that helps.

**Q: What is the thread pitch on these?**
A: I don't know the thread. It comes with its own nut.

**Q: Does this "Switch" contain physical contacts that open and close or is it some type of transistor?**
A: This unit is an enclosed switch with two wires coming out. It can be installed to make/break contact in a fluid. I use it for water. When installed in one direction, it makes contact when full; when installed the other direction, it makes contact when empty. Thus, I have one switch at the top of a container collecting water to trigger when it is full; the other switch is at the bottom to trigger when it is empty.

**Q: Will these work under water?**
A: Yes, that is how they work. In this installation the circuit is closed until the water is high enough to open it. As the water rises the float goes up, opening the circuit. When the circuit is closed, power goes to a 12Volt solenoid that allows water from an RO/DI unit to flow into the holding tank.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great - if you use it correctly
*by C***N on February 24, 2022*

Works great with Arduino to control nutrient solution levels in hydroponic system. digitalRead(A0); returns "1" or "0." For my application, as sensor falls, a "1" is sent to the Arduino, which charges a DC-DC relay to activate normally closed solenoid valve until signal reads "0" again. I was hesitant to order after reading a lot of the reviews that insisted they go out after a short while, until I more closely examined the reviews. You cannot wire these directly between a source and a load (over about 5v) or they will predictably burn out! They are sensors, not switches, and as such must be "read" by another device that is then able to act upon it. As at least one other reviewer has noted, Arduino is a simple and safe platform for reading the signal and causing some other action based on the state of the sensor. If you need more info, Youtube it - "Arduino float switch"

### ⭐⭐⭐⭐⭐ Works well but the photos are misleading for the install
*by P***Y on July 9, 2022*

The sensors themselves work great so far and seem reliable. There are no instructions on how to properly install this so I had to dig around and look at other similar products and installation photos to figure it out. The photos show the silicone gasket backwards from what actually works. The flange goes on the inside, through the hole, then the nylon washer goes on, then the nut. These create a watertight seal on both sides.

### ⭐⭐⭐⭐⭐ Floats my boat.
*by S***D on December 23, 2025*

I used the float switch, a 5v usb power supply, and a relay to water my Chirstmas tree automatically. As a side note... sometimes aliexpress lists the breakdown voltage of float switches as their "Maximum" voltage when their actual specified operating maximum voltage is 50% of this... so you think 120V ac is safe to use with your float switch with the "maximum" voltage of 200V... and it is for 2 years... but... then, while you're sleeping, the switch gets stuck(electrically) closed and dumps 4 gallons of water under your Christmas Tree...

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*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-01-25*