---
product_id: 313857544
title: "CQRobot Ocean: Non-Contact Water/Liquid Level Sensor Compatible with Arduino, Raspberry Pi and Other Motherboards. for Industrial Production, Aquarium, Chemical Liquid, Agriculture, Gardening, etc."
brand: "cqrobot"
price: "€ 49.37"
currency: EUR
in_stock: true
reviews_count: 5
category: "Cq Robot"
url: https://www.desertcart.hr/products/313857544-cqrobot-ocean-non-contact-water-liquid-level-sensor-compatible-arduino
store_origin: HR
region: Croatia
---

# Dual voltage output (3.3V/5V) 12mm sensing distance Plug & play with Arduino & Raspberry Pi CQRobot Ocean: Non-Contact Water/Liquid Level Sensor Compatible with Arduino, Raspberry Pi and Other Motherboards. for Industrial Production, Aquarium, Chemical Liquid, Agriculture, Gardening, etc.

**Brand:** cqrobot
**Price:** € 49.37
**Availability:** ✅ In Stock

## Summary

> 🌊 Level up your liquid sensing game—contactless, precise, and ready for any challenge!

## Quick Answers

- **What is this?** CQRobot Ocean: Non-Contact Water/Liquid Level Sensor Compatible with Arduino, Raspberry Pi and Other Motherboards. for Industrial Production, Aquarium, Chemical Liquid, Agriculture, Gardening, etc. by cqrobot
- **How much does it cost?** € 49.37 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/313857544-cqrobot-ocean-non-contact-water-liquid-level-sensor-compatible-arduino)

## Best For

- cqrobot enthusiasts

## Why This Product

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

## Key Features

- • **Adaptive Voltage Output:** Easily switch between 3.3V and 5V output via DIP switch for seamless integration with your favorite microcontrollers.
- • **Robust Signal Processing:** Advanced chip tech filters out electromagnetic and power frequency interference for ultra-stable, reliable readings.
- • **Precision Non-Contact Sensing:** Detect liquid levels through plastic, glass, and ceramic with up to 12mm penetration—no container modifications needed.
- • **Versatile Liquid Compatibility:** Safely monitor toxic chemicals, strong acids, alkalis, and even powders without sensor contamination or damage.
- • **Effortless Installation & Integration:** Lightweight (50g) and compact design ensures quick setup in industrial, agricultural, or aquarium environments—get your project live faster.

## Overview

The CQRobot Ocean Non-Contact Water/Liquid Level Sensor offers high-sensitivity, interference-resistant detection of liquid levels through non-metallic containers up to 12mm thick. Compatible with Arduino, Raspberry Pi, and other motherboards, it supports dual voltage outputs (3.3V/5V) and is ideal for industrial, agricultural, aquarium, and chemical applications requiring safe, non-invasive liquid monitoring.

## Description

The CQRobot non-contact liquid level sensor realizes non-contact detection of the liquid level in a closed container. It adopts advanced signal processing technology and high-speed signal processing chip, breaking through the influence of container wall thickness. It is simple to install and easy to use, and can detect the level of various toxic substances, strong acids, strong alkalis and various liquids in high-pressure airtight containers. The sensor comes with 2 DIP switches, Compatible with Arduino, Raspberry Pi and Other Motherboards. ​ Note: For technical support, please refer to CQRobot Wiki to get the test code, SKU: CQRSENYW001.SPECIFICATIONSSensor Probe and Adapter Specifications - Input Voltage: DC 5V - Current Consumption: 5mA - Output Voltage (High Level): 3.3V or 5V (Right Dial Switch Control) - Output Voltage: 0 - Output Current: 1mA to 50mA - Response Time: 500ms - Working Environment Temperature: 0 to 105 Degree Celsius - Induction Thickness (Sensitivity) Range: 0 to 13 mm - Humidity: 5% to 100% - Material: ABS - Waterproof Performance: IP67 - Dimension: 31.6mm * 30mm - Mounting hole size: 3.0mm Ocean interface Cable Specifications - Cable Specifications: 22AWG - Material: Silicone - Length: 21cm - Withstand Voltage: Less Than 50V - Withstand Current: Less Than 1000MA - Line Sequence: Black-Negative Power Supply, Red-Positive Power Supply, Green-Signal.DISTRIBUTION LIST1* Liquid Level Sensor Probe 1* Liquid Level Sensor Adapter 1 * Ocean interface JST 3-Pin Cable

Review: Complemento para Arduino o Raspberry de alta calidad, bien protegido y fabricado con esmero, este sensor permite comprobar el nivel en un depósito sin entrar en contacto con el líquido, ideal para aplicaciones industriales, un lujo para tener en clase… PRESENTACIÓN: Viene en una pequeña cajita, protegido con una bolsita sellada anti-UV, lo que garantiza que lo recibamos en buenas condiciones. No trae ningún tipo de manual, aunque en la web del fabricante disponen de una página exclusiva para este set, con una explicación exhaustiva del montaje, con ejemplos de posicionamiento, esquema de pruebas e incluso códigos de ejemplo, tanto para Arduino como Raspberry: _ Sensor de nivel de líquido sin contacto, adecuado para instalar en las paredes externas de recipientes, depósitos o tanques, sin contacto directo con líquido, sin corrosión, sin deterioro por ácidos y álcalis, libre de incrustaciones u otros desechos. _ La sonda tiene un diámetro de 28 mm., la placa es de 30 x 30 mm, el cable entre sonda y placa mide 48 cm. y por el otro lado el cable a la micro-controladora mide 30 cm. _ La sonda puede detectar el nivel de agua hirviendo, ya que soporta trabajar hasta 105 °C, y tiene un acabado IP67, lo que permite trabajar a la intemperie… _ Tratamiento especial para interferencias y campos electromagnéticos… _ Especial para contenedores NO METÁLICOS, como plástico, vidrio, cerámica, etc… _ La distancia de detección puede alcanzar 12 mm _ Tiene un interruptor para seleccionar el voltaje de entrada, entre 3 y 5 V. _ Tiene un interruptor para seleccionar el modo de funcionamiento, abierto o cerrado. Pensado especialmente para aplicaciones industriales, este es un dispositivo listo para su uso. Simplemente hay que conectarlo a una placa de Arduino o Raspberry según el esquema indicado en la web del fabricante. Un lujo para tener en Institutos y Escuelas para aulas de robótica, electrónica y mecánica de fluidos. Nosotros hemos realizado la prueba con una placa Arduino UNO cargada con el código fuente del fabricante, una jarra de cristal de 6 mm. de grosor y ha detectado perfectamente cuando el nivel a llegado al módulo de tres líquidos diferentes, agua, aceite y gaseosa con muchas burbujas… Ha sido muy interesante… En resumen, si buscas una sonda de nivel de líquidos, especial para usar por el exterior del contenedor, esta es una de las mejores opciones, muy bien fabricado, con la información necesaria en la web del fabricante… Ideal para aplicaciones industriales, comerciales y sobre todo para uso educativo en Secundaria o Formación Profesional… Saludos!!!
Review: J’ai dans ma cave plusieurs citernes à mazout en plastique couplées entre elles. Lors du remplissage certaines citernes se remplissent plus vite que d’autres. J’ai utilisé ce détecteur pour commander des vannes motorisées qui se ferment automatiquement dès que la citerne est pleine, ceci afin d’éviter qu’une citerne ne déborde et pour permettre aux autres de se remplir complètement. 100% compatible Arduino, ça fonctionne bien et le prix n’est vraiment pas cher. Je recommande

## Features

- The CQRobot non-contact liquid level sensor realizes non-contact detection of the liquid level in a closed container. It adopts advanced signal processing technology and high-speed signal processing chip, breaking through the influence of container wall thickness. It is simple to install and easy to use, and can detect the level of various toxic substances, strong acids, strong alkalis and various liquids in high-pressure airtight containers.
- The principle is to use the inductive capacitance of water to detect whether there is liquid. When there is no liquid close to the sensor, the sensor has a certain static capacitance to the ground due to the existence of distributed capacitance on the sensor. When the liquid level slowly rises and approaches In the case of an inductor, the parasitic capacitance of the liquid will be coupled to this static capacitance, making the final capacitance value of the inductor larger.
- The changed capacitance signal is then input to the control IC for signal conversion, which converts the changed capacitance into a change of a certain electrical signal, and then a certain algorithm is used to detect and judge the degree of this change. When the change exceeds a certain amount It is considered that the liquid level has reached the sensing point when the threshold is reached.
- High stability, high sensitivity, strong interference ability, no external electromagnetic interference, special treatment for power frequency interference and common mode interference, strong compatibility, penetration of various non-metallic containers, such as plastic, glass, For ceramics and other containers, the sensing distance can reach more than 12mm; liquid, powder, and particulate matter can be detected.
- The sensor comes with 2 DIP switches, the right DIP switch controls the output voltage (high level) of the signal terminal (green line); when the DIP switch is dialed up, the high level is 5V; when the DIP switch is facing When dialing down, the high level is 3.3V. Compatible with Arduino, Raspberry Pi and Other Motherboards.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07ZMHJ6NN |
| Best Sellers Rank | #92,633 in Computers ( See Top 100 in Computers ) #1,490 in Single-Board Computers |
| Brand Name | CQRobot |
| Customer Reviews | 4.4 4.4 out of 5 stars (66) |
| Item Weight | 0.05 Kilograms |
| Manufacturer | CQRobot |
| Material Type | Acrylonitrile Butadiene Styrene |
| Maximum Supply Voltage | 5 Volts (DC) |
| Model | CQRSENYW001 |
| Mounting Type | Surface Mount |
| Output Type | digital |
| Part Number | CQRSENYW001 |
| Response Time | 500 Milliseconds |
| Sensing Distance | 13 Millimeters |
| Specific Uses For Product | industrial production, aquarium, chemical liquid, agriculture, gardening |
| Style Name | Non-Contact Liquid Level Sensor |
| Upper Temperature Rating | 105 Degrees Celsius |

## Product Details

- **Brand:** CQRobot
- **Item weight:** 0.05 Kilograms
- **Material:** Acrylonitrile Butadiene Styrene
- **Maximum supply voltage:** 5 Volts (DC)
- **Style:** Non-Contact Liquid Level Sensor

## Images

![CQRobot Ocean: Non-Contact Water/Liquid Level Sensor Compatible with Arduino, Raspberry Pi and Other Motherboards. for Industrial Production, Aquarium, Chemical Liquid, Agriculture, Gardening, etc. - Image 1](https://m.media-amazon.com/images/I/61jpk8-rfmL.jpg)
![CQRobot Ocean: Non-Contact Water/Liquid Level Sensor Compatible with Arduino, Raspberry Pi and Other Motherboards. for Industrial Production, Aquarium, Chemical Liquid, Agriculture, Gardening, etc. - Image 2](https://m.media-amazon.com/images/I/81rR-K5AtpL.jpg)
![CQRobot Ocean: Non-Contact Water/Liquid Level Sensor Compatible with Arduino, Raspberry Pi and Other Motherboards. for Industrial Production, Aquarium, Chemical Liquid, Agriculture, Gardening, etc. - Image 3](https://m.media-amazon.com/images/I/81Flqo3aXRL.jpg)
![CQRobot Ocean: Non-Contact Water/Liquid Level Sensor Compatible with Arduino, Raspberry Pi and Other Motherboards. for Industrial Production, Aquarium, Chemical Liquid, Agriculture, Gardening, etc. - Image 4](https://m.media-amazon.com/images/I/71lHPeVzQyL.jpg)
![CQRobot Ocean: Non-Contact Water/Liquid Level Sensor Compatible with Arduino, Raspberry Pi and Other Motherboards. for Industrial Production, Aquarium, Chemical Liquid, Agriculture, Gardening, etc. - Image 5](https://m.media-amazon.com/images/I/71-Mth4GBPL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: To clarify, the theoretical dialectic capacitance of distilled water is 0.348 nF.  The air gap dialectic capacitance of the electrode is unknown?**
A: Hello! Regarding the "electrode air gap dialectical capacitance" you mentioned, it is not included in our product production technical indicators, so we are very sorry that we cannot answer this question for you.

**Q: Will it read through black plastic waist water tank on trailer**
A: Hi! It can read through the outer wall of non-metallic containers with a thickness of less than 13 mm. If the wall thickness of the black plastic waste tank on your trailer exceeds 13 mm, it is likely to be unreadable.
The following is the Wiki of this product for reference:
http://www.cqrobot.wiki/index.php/Non-Contact_Water/Liquid_Level_Sensor_SKU:_CQRSENYW001

**Q: Will this work on the outside of a curved 15 gallon hdpe water reservoir? i have some of thhe optical sensor but want to switch containers.**
A: Hello! Just make sure that its outer wall meets the requirements for use. You can refer to the following wiki for this product:
http://www.cqrobot.wiki/index.php/Non-Contact_Water/Liquid_Level_Sensor_SKU:_CQRSENYW001

**Q: Can I extend the wires? Is it better to lengthen wires between sensor cb and rPi or sensor cb and sensor?**
A: Hello! If you need to extend the wire, it is recommended to lengthen the wire between the sensor cb and RPi so that the sensing sensitivity of the sensor is not affected too much.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by F***A on 12 January 2020*

Complemento para Arduino o Raspberry de alta calidad, bien protegido y fabricado con esmero, este sensor permite comprobar el nivel en un depósito sin entrar en contacto con el líquido, ideal para aplicaciones industriales, un lujo para tener en clase… PRESENTACIÓN: Viene en una pequeña cajita, protegido con una bolsita sellada anti-UV, lo que garantiza que lo recibamos en buenas condiciones. No trae ningún tipo de manual, aunque en la web del fabricante disponen de una página exclusiva para este set, con una explicación exhaustiva del montaje, con ejemplos de posicionamiento, esquema de pruebas e incluso códigos de ejemplo, tanto para Arduino como Raspberry: _ Sensor de nivel de líquido sin contacto, adecuado para instalar en las paredes externas de recipientes, depósitos o tanques, sin contacto directo con líquido, sin corrosión, sin deterioro por ácidos y álcalis, libre de incrustaciones u otros desechos. _ La sonda tiene un diámetro de 28 mm., la placa es de 30 x 30 mm, el cable entre sonda y placa mide 48 cm. y por el otro lado el cable a la micro-controladora mide 30 cm. _ La sonda puede detectar el nivel de agua hirviendo, ya que soporta trabajar hasta 105 °C, y tiene un acabado IP67, lo que permite trabajar a la intemperie… _ Tratamiento especial para interferencias y campos electromagnéticos… _ Especial para contenedores NO METÁLICOS, como plástico, vidrio, cerámica, etc… _ La distancia de detección puede alcanzar 12 mm _ Tiene un interruptor para seleccionar el voltaje de entrada, entre 3 y 5 V. _ Tiene un interruptor para seleccionar el modo de funcionamiento, abierto o cerrado. Pensado especialmente para aplicaciones industriales, este es un dispositivo listo para su uso. Simplemente hay que conectarlo a una placa de Arduino o Raspberry según el esquema indicado en la web del fabricante. Un lujo para tener en Institutos y Escuelas para aulas de robótica, electrónica y mecánica de fluidos. Nosotros hemos realizado la prueba con una placa Arduino UNO cargada con el código fuente del fabricante, una jarra de cristal de 6 mm. de grosor y ha detectado perfectamente cuando el nivel a llegado al módulo de tres líquidos diferentes, agua, aceite y gaseosa con muchas burbujas… Ha sido muy interesante… En resumen, si buscas una sonda de nivel de líquidos, especial para usar por el exterior del contenedor, esta es una de las mejores opciones, muy bien fabricado, con la información necesaria en la web del fabricante… Ideal para aplicaciones industriales, comerciales y sobre todo para uso educativo en Secundaria o Formación Profesional… Saludos!!!

### ⭐⭐⭐⭐⭐ Review
*by O***S on 2 February 2020*

J’ai dans ma cave plusieurs citernes à mazout en plastique couplées entre elles. Lors du remplissage certaines citernes se remplissent plus vite que d’autres. J’ai utilisé ce détecteur pour commander des vannes motorisées qui se ferment automatiquement dès que la citerne est pleine, ceci afin d’éviter qu’une citerne ne déborde et pour permettre aux autres de se remplir complètement. 100% compatible Arduino, ça fonctionne bien et le prix n’est vraiment pas cher. Je recommande

### ⭐⭐⭐⭐⭐ Review
*by F***P on 29 March 2025*

Works very well and exactly as advertised— which, for some reason, appears to be quite a feat in this day and age…

## Frequently Bought Together

- CQRobot Non-Contact Water/Liquid Level Sensor Compatible with Arduino, Raspberry Pi and Other Motherboards. for Industrial Production, Aquarium, Chemical Solution, Agriculture, Gardening, etc.
- Arduino Uno REV3 [A000066] – ATmega328P Microcontroller, 16MHz, 14 Digital I/O Pins, 6 Analog Inputs, 32KB Flash, USB Connectivity, Compatible with Arduino IDE for DIY Projects and Prototyping
- ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.hr/products/313857544-cqrobot-ocean-non-contact-water-liquid-level-sensor-compatible-arduino](https://www.desertcart.hr/products/313857544-cqrobot-ocean-non-contact-water-liquid-level-sensor-compatible-arduino)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-05-23*