---
product_id: 171885566
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: "R$281"
currency: BRL
in_stock: true
category: "Cq Robot"
url: https://www.desertcart.com.br/products/171885566-cqrobot-contact-water-liquid-level-sensor-compatible-with-raspberry-pi
store_origin: BR
region: Brazil
---

# Ultra-low 12mA power draw ±0.5mm precision sensing Flexible multi-orientation mount 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:** R$281
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead of the curve with pinpoint water sensing—because your smart garden deserves the best!

## 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?** R$281 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/171885566-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

- • **Power-Savvy Design:** Consumes just 12mA, perfect for energy-conscious smart setups.
- • **Versatile Mounting:** Install it up, down, sideways, or diagonally—fits any project layout.
- • **Plug & Play Compatibility:** Seamlessly integrates with Raspberry Pi & Arduino for instant smart control.
- • **Corrosion & Heat Resistant:** Built to last with chemical stability and up to 105°C tolerance.
- • **Precision Liquid Detection:** Detects water presence with ±0.5mm accuracy for flawless automation.

## Overview

The CQRobot Contact Water/Liquid Level Sensor is a compact, photoelectric sensor designed for precise, non-contact water level detection with ±0.5mm accuracy. Operating at ultra-low power (12mA) and supporting both 3.3V and 5V logic levels, it offers flexible mounting orientations and robust resistance to corrosion, heat (up to 105°C), and chemicals. Compatible with Raspberry Pi and Arduino platforms, it’s ideal for smart irrigation, aquariums, and agricultural automation, delivering reliable, maintenance-free liquid level monitoring.

## Description

CQRobot Contact Water/Liquid Level Sensor Compatible with Raspberry Pi/Arduino. for Automatic Irrigation Systems, Aquariums, Plants, in the Garden, in Agriculture etc. : desertcart.co.uk: Business, Industry & Science

## 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 |
|---------------|-------|
| ASIN | B07ZMGW3QJ |
| Best Sellers Rank | 30,641 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 25 in Liquid Level Sensors |
| Brand | CQRobot |
| Country Of Origin | China |
| Current Rating | 12 Milliamps |
| Current rating | 12 Milliamps |
| Customer Reviews | 4.5 out of 5 stars 392 Reviews |
| Item Dimensions | 21 x 3.6 x 7.1 centimetres |
| Item Weight | 0.05 Kilograms |
| Item dimensions L x W x H | 21 x 3.6 x 7.1 centimetres |
| Item weight | 0.05 Kilograms |
| Manufacturer | CQRobot |
| Material | silicone pc |
| Maximum Supply Voltage | 5 Volts (DC) |
| Measurement Accuracy | ±0.5mm |
| Model Number | CQRSENYW002 |
| Mounting Type | Wall Mount |
| Output Type | Digital |
| Sensing Distance | 50 Centimetres |
| Specific Uses For Product | Automatic Irrigation Systems, Aquariums, Plants, Garden, Agriculture, Alarm Function |
| Style | Single Point Contact Type |
| Style Name | Single Point Contact Type |
| Upper Temperature Rating | 105 Degrees Celsius |

## Product Details

- **Brand:** CQRobot
- **Item dimensions L x W x H:** 21 x 3.6 x 7.1 centimetres
- **Item weight:** 0.05 Kilograms
- **Material:** silicone pc
- **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)
![CQRobot Contact Water/Liquid Level Sensor Compatible with Raspberry Pi/Arduino. for Automatic Irrigation Systems, Aquariums, Plants, in the Garden, in Agriculture etc. - Image 2](https://m.media-amazon.com/images/I/81rsh-FqbSL.jpg)
![CQRobot Contact Water/Liquid Level Sensor Compatible with Raspberry Pi/Arduino. for Automatic Irrigation Systems, Aquariums, Plants, in the Garden, in Agriculture etc. - Image 3](https://m.media-amazon.com/images/I/71IhnnfnpLL.jpg)
![CQRobot Contact Water/Liquid Level Sensor Compatible with Raspberry Pi/Arduino. for Automatic Irrigation Systems, Aquariums, Plants, in the Garden, in Agriculture etc. - Image 4](https://m.media-amazon.com/images/I/717Tz2cOLfL.jpg)
![CQRobot Contact Water/Liquid Level Sensor Compatible with Raspberry Pi/Arduino. for Automatic Irrigation Systems, Aquariums, Plants, in the Garden, in Agriculture etc. - Image 5](https://m.media-amazon.com/images/I/71SoUv4NMyL.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

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-05-16*