---
product_id: 313857546
title: "CQRobot Contact Water/Liquid Level Sensor Compatible with Raspberry Pi/Arduino. for Automatic Irrigation Systems, Aquariums, Plants, in The Garden, in Agriculture etc."
brand: "cqrobot"
price: "€ 55.63"
currency: EUR
in_stock: true
url: https://www.desertcart.sk/products/313857546-cqrobot-contact-water-liquid-level-sensor-compatible-with-raspberry-pi
store_origin: SK
region: Slovakia
---

# Low power consumption Optical liquid detection Multi-orientation mounting CQRobot Contact Water/Liquid Level Sensor Compatible with Raspberry Pi/Arduino. for Automatic Irrigation Systems, Aquariums, Plants, in The Garden, in Agriculture etc.

**Brand:** cqrobot
**Price:** € 55.63
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead with smart sensing—never miss a drop, automate your flow!

## Quick Answers

- **What is this?** CQRobot Contact Water/Liquid Level Sensor Compatible with Raspberry Pi/Arduino. for Automatic Irrigation Systems, Aquariums, Plants, in The Garden, in Agriculture etc. by cqrobot
- **How much does it cost?** € 55.63 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/313857546-cqrobot-contact-water-liquid-level-sensor-compatible-with-raspberry-pi)

## 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

- • **Robust Durability:** Engineered with corrosion, high temperature, and pressure resistance for long-lasting reliability.
- • **Flexible Installation:** Compact probe fits any angle—up, down, sideways—perfect for diverse environments.
- • **Plug & Play Compatibility:** Seamlessly integrates with Raspberry Pi and Arduino for effortless smart automation.
- • **Precision Optical Sensing:** Harnesses advanced photoelectric tech for ultra-sensitive liquid level detection.
- • **Customizable Output Voltage:** DIP switch lets you toggle between 3.3V and 5V signal levels to match your system needs.

## Overview

The CQRobot Contact Water/Liquid Level Sensor uses cutting-edge optical principles to deliver precise, maintenance-free liquid level detection. Compatible with Raspberry Pi and Arduino, it supports versatile installation angles and offers customizable output voltages. Built to withstand harsh conditions, this sensor is ideal for automated irrigation, aquariums, and agricultural applications, empowering professionals to optimize water management with confidence.

## Description

CQRobot Contact Water/Liquid Level Sensor, This is a photoelectric water liquid level sensor that is operates using optical principles. The advantages of this photoelectric water liquid level sensor are good sensitivity and no need for mechanical parts - meaning less calibration! This sensor probe is small in size and has a structure that can be placed up, down, laterally, and diagonally in multiple orientations to detect solution spillage, dryness and horizontal level. Can be used as a reminder and alarm function. Built-in emitting diode and phototransistor, the charged part is completely isolated from the controlled liquid, so there is no safety hazard. Note: For technical support, please refer to the CQRobot Wiki to obtain the test code, SKU: CQRSENYW002.SPECIFICATIONSensor Specifications - Type: Photoelectric Level Switch - Power Supply Voltage: DC 5V - Output Current: 12 (mA) - Working Temperature: -25 Degree Celsius to +105 Degree Celsius - Low Level Output: Less Than 0.1V - High Level Output: 3.3V or 5V (Dial Switch Control) - Liquid Level Detection Accuracy: Plus/Minus 0.5mm - Material: PC - Measuring Range: NO Limit - Life: 50,000 Hours - Scope of Application: Water Level Control and Protection of Electrical Products - Probe Line Length: 50cm - Dimension: 35mm * 36mm - Mounting hole size: 3.0mm 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 * JST 3-Pin Cable

## Features

- Contact Water/Liquid Level Sensor, This is a photoelectric water liquid level sensor that is operates using optical principles. Open collector output mode, suitable for connecting various circuits and product applications.
- The sensor has no mechanical parts, requires no additional adjustment, and has high sensitivity, low power consumption, corrosion resistance, high pressure resistance, high temperature resistance and chemical stability.
- This sensor probe is small in size and has a structure that can be placed up, down, laterally, and diagonally in multiple orientations to detect solution spillage, dryness and horizontal level. Can be used as a reminder and alarm function.
- The sensor has a DIP switch. The DIP switch controls the output voltage (high level) of the signal terminal (green line). When the DIP switch is dialed to 5V, the high level is 5V. When the DIP switch is dialed At 3V, the high level is 3.3V.
- Compatible with Arduino motherboard and Raspberry Pi motherboard. for Automatic Irrigation Systems, Aquariums, Plants, in The Garden, in Agriculture etc.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | CQRobot |
| Product Dimensions | 21 x 3.6 x 7.11 cm; 50 g |
| Item model number | CQRSENYW002 |
| Manufacturer | CQRobot |
| Color | Contact |
| Form Factor | contact |
| Graphics Card Description | Dedicated |
| Voltage | 5 Volts |
| Power Source | Corded Electric |
| Are Batteries Included | No |
| Item Weight | 50 g |

## Product Details

- **Brand:** CQRobot
- **Item dimensions L x W x H:** 21 x 3.6 x 7.1 centimeters
- **Material:** silicone pc
- **Item weight:** 0.05 Kilograms
- **Style:** Single Point Contact Type

## Images

![CQRobot Contact Water/Liquid Level Sensor Compatible with Raspberry Pi/Arduino. for Automatic Irrigation Systems, Aquariums, Plants, in The Garden, in Agriculture etc. - Image 1](https://m.media-amazon.com/images/I/6196nLvX7JL.jpg)

## Available Options

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

## Questions & Answers

**Q: can this be mounted to the lid of a bucket and read the water levels inside as they go down? or is this basically a contact switch that detects liquid**
A: It's just a liquid contact switch.

**Q: Can I purchase just the board with the 3-wire connector somewhere?**
A: Sorry, buyers only sell kits.

**Q: Is there a Fritzing (or other schematic app) component that I can download for this product?**
A: Hello ,
For specific product descriptions, you can log in to our official link address to view, hope it will be helpful to you, if you have any questions, please contact me in time, thank you!
Wiki:
 http://www.cqrobot.wiki/index.php/Liquid_Level_Sensor

**Q: What is vin vs in for the breakout board? which pin varies when in contact with water? i assuming one connects to the 5v and other varies voltage?**
A: Hi! It is recommended that you refer to the technical information of this product (Wiki: http://www.cqrobot.wiki/index.php/Contact_Water/Liquid_Level_Sensor_SKU:_CQRSENYW002).
If you have any questions, please feel free to contact us!

## Frequently Bought Together

- CQRobot Contact Water/Liquid Level Sensor Compatible with Raspberry Pi/Arduino. for Automatic Irrigation Systems, Aquariums, Plants, in The Garden, in Agriculture etc.
- CQRobot TDS (Total Dissolved Solids) Meter Sensor Compatible with Raspberry Pi/Arduino Board. for Liquid Quality Analysis Teaching, Scientific Research, Laboratory, Online Analysis, etc.
- PH Sensor for Arduino, PH0-14 Value Detect Sensor Module + PH Electrode Probe BNC, PH Sensor UNO, PH Sensor Arduino Kit, PH Sensor Raspberry Pi Kit, by HQ&LP

---

## 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.sk/products/313857546-cqrobot-contact-water-liquid-level-sensor-compatible-with-raspberry-pi](https://www.desertcart.sk/products/313857546-cqrobot-contact-water-liquid-level-sensor-compatible-with-raspberry-pi)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-21*