---
product_id: 313857551
title: "CQRobot Ocean: TDS (Total Dissolved Solids) Meter Sensor Compatible with Raspberry Pi/Arduino Board. for Liquid Quality Analysis Teaching, Scientific Research, Laboratory, Online Analysis, etc."
brand: "cqrobot"
price: "$55"
currency: NZD
in_stock: true
url: https://www.desertcart.nz/products/313857551-cqrobot-ocean-tds-total-dissolved-solids-meter-sensor-compatible-raspberry
store_origin: NZ
region: New Zealand
---

# 3.3V-5.5V wide voltage input Waterproof probe for durability 0-2.3V analog output, high compatibility CQRobot Ocean: TDS (Total Dissolved Solids) Meter Sensor Compatible with Raspberry Pi/Arduino Board. for Liquid Quality Analysis Teaching, Scientific Research, Laboratory, Online Analysis, etc.

**Brand:** cqrobot
**Price:** $55
**Availability:** ✅ In Stock

## Summary

> 🌊 Dive into precision with the ultimate TDS sensor for your smart projects!

## Quick Answers

- **What is this?** CQRobot Ocean: TDS (Total Dissolved Solids) Meter Sensor Compatible with Raspberry Pi/Arduino Board. for Liquid Quality Analysis Teaching, Scientific Research, Laboratory, Online Analysis, etc. by cqrobot
- **How much does it cost?** $55 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/313857551-cqrobot-ocean-tds-total-dissolved-solids-meter-sensor-compatible-raspberry)

## 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

- • **Waterproof Durability:** Robust probe design built to withstand wet environments and long-term use.
- • **Enhanced Data Accuracy:** Pairs seamlessly with ADS1115 16-bit ADC for high-resolution liquid quality analysis.
- • **Plug & Play Simplicity:** Effortless Arduino and Raspberry Pi integration—no soldering needed.
- • **Precision You Can Trust:** AC excitation source prevents probe polarization for accurate readings every time.
- • **Versatile Voltage Range:** Supports 3.3V to 5.5V input, perfect for diverse microcontroller setups.

## Overview

The Ocean TDS Meter Sensor offers a waterproof probe and wide voltage compatibility (3.3V-5.5V), delivering 0-2.3V analog output ideal for Raspberry Pi and Arduino boards. Featuring an AC excitation source to prevent probe polarization, it ensures reliable, high-accuracy liquid quality measurements for scientific research, education, and online analysis.

## Description

CQRobot Ocean: TDS (Total Dissolved Solids) Meter Sensor Compatible with Raspberry Pi/Arduino Board. for Liquid Quality Analysis Teaching, Scientific Research, Laboratory, Online Analysis, etc.

## Features

- Wide Voltage Input: 3.3V to 5.5V. Good Compatibility Output: 0 to 2.3V analog signal output, compatible with 5V or 3.3V controller.
- AC Excitation Source: effectively prevent probe from polarization, Waterproof Probe.
- Easy to Use: Arduino compatible, simple connection, plug and play without soldering.
- Used with ADS1115 16-Bit ADC Module (ASIN: B08KFZ3PVT, Model: CQRADS1115), Compatible with Raspberry Pi Motherboard.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08KXRHK7H |
| Best Sellers Rank | #128,334 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #27 in Conductivity Meters & Accessories |
| Brand | CQRobot |
| Brand Name | CQRobot |
| Current Rating | 4 Milliamps |
| Customer Reviews | 4.2 out of 5 stars 229 Reviews |
| Item Weight | 0.05 Kilograms |
| Manufacturer | CQRobot |
| Material | PLA_(Polylactic Acid), PE_(Polyethylene) |
| Material Type | PLA_(Polylactic Acid), PE_(Polyethylene) |
| Maximum Supply Voltage | 5.5 Volts |
| Measurement Accuracy | +/- 10% F.S. (25 Degree Celsius) |
| Model | CQRSENTDS01 |
| Output Type | Analog Voltage |
| Specific Uses For Product | laboratory, scientific research, teaching, liquid quality analysis, online analysis |
| Style | Modern |
| Style Name | Modern |

## Product Details

- **Brand:** CQRobot
- **Material:** Silicone
- **Item weight:** 0.05 Kilograms
- **Style:** Modern
- **Current rating:** 4 Milliamps

## Images

![CQRobot Ocean: TDS (Total Dissolved Solids) Meter Sensor Compatible with Raspberry Pi/Arduino Board. for Liquid Quality Analysis Teaching, Scientific Research, Laboratory, Online Analysis, etc. - Image 1](https://m.media-amazon.com/images/I/61E4z2jd5zL.jpg)
![CQRobot Ocean: TDS (Total Dissolved Solids) Meter Sensor Compatible with Raspberry Pi/Arduino Board. for Liquid Quality Analysis Teaching, Scientific Research, Laboratory, Online Analysis, etc. - Image 2](https://m.media-amazon.com/images/I/71FdAzdjf1L.jpg)
![CQRobot Ocean: TDS (Total Dissolved Solids) Meter Sensor Compatible with Raspberry Pi/Arduino Board. for Liquid Quality Analysis Teaching, Scientific Research, Laboratory, Online Analysis, etc. - Image 3](https://m.media-amazon.com/images/I/71shj9fyHJL.jpg)
![CQRobot Ocean: TDS (Total Dissolved Solids) Meter Sensor Compatible with Raspberry Pi/Arduino Board. for Liquid Quality Analysis Teaching, Scientific Research, Laboratory, Online Analysis, etc. - Image 4](https://m.media-amazon.com/images/I/71IpiRSKLyL.jpg)
![CQRobot Ocean: TDS (Total Dissolved Solids) Meter Sensor Compatible with Raspberry Pi/Arduino Board. for Liquid Quality Analysis Teaching, Scientific Research, Laboratory, Online Analysis, etc. - Image 5](https://m.media-amazon.com/images/I/71bR35bLnIL.jpg)

## Questions & Answers

**Q: Can this sensor work with an ESP32 and esphome?**
A: Hello! It can be used with ESP32 and esphome, it's just that we don't have example test code at the moment. Buyers need to have a certain ESP32 application coding foundation, test and write code by themselves.

**Q: Can the probe be fully submersed? And if so, for how long? Indefinitely?**
A: Hi! The TDS probe and lead are made of waterproof material and can be immersed in water, but the cable interface and signal transfer board are not waterproof, please use it with caution. Please refer to the "Connections and Examples" section in the Wiki of this product below:
http://www.cqrobot.wiki/index.php/TDS_(Total_Dissolved_Solids)_Meter_Sensor_SKU:_CQRSENTDS01

**Q: Is the sensor able to be plumbed into water line? a number of tds sensors will directly fit in a 1/4" push connect fitting.**
A: Hi! The probe and lead of the TDS sensor are made of waterproof material, which can be inserted into the water pipe and installed in the 1/4" push connection fitting, but make sure that the water temperature in the water pipe does not exceed 55 degrees Celsius, because the probe cannot be used in water above 55 degrees Celsius. Please. Refer to the "Connections and Examples" section in the following Wiki of this product:
http://www.cqrobot.wiki/index.php/TDS_(Total_Dissolved_Solids)_Meter_Sensor_SKU:_CQRSENTDS01

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-09*