Can this sensor work with an ESP32 and esphome?

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.

Can the probe be fully submersed? And if so, for how long? Indefinitely?

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

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.

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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CQRobot TDS Water Quality Monitoring Sensor for Arduino & Raspberry Pi

CQRobot TDS Water Quality Monitoring Sensor for Arduino & Raspberry Pi

Product ID: 246746858

Details

Brand
CQRobot
Current Rating
4 milliamps
Item Weight
0.05 kg
Material
Acid)
Style
Modern

⚡3.3V-5.5V wide voltage input

💧Waterproof probe with AC excitation

📊0-2.3V analog output, Arduino & Pi ready

R533

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Description

💧 Stay ahead with crystal-clear water insights—because your ecosystem deserves the best!

PLUG PLAY PRECISION - Effortless Arduino & Raspberry Pi integration—no soldering needed
RELIABLE ANALOG OUTPUT - 0-2.3V signal ensures accurate TDS readings every time
VERSATILE VOLTAGE RANGE - Operates smoothly from 3.3V to 5.5V for broad compatibility
DURABLE WATERPROOF PROBE - Built to withstand immersion, perfect for aquariums and hydroponics
POLARIZATION FREE SENSING - AC excitation source prevents probe polarization for consistent data

The CQRobot TDS Water Quality Monitoring Sensor delivers precise Total Dissolved Solids measurements with a wide voltage input (3.3V-5.5V) and a reliable 0-2.3V analog output compatible with Arduino and Raspberry Pi. Featuring a waterproof probe and AC excitation to prevent polarization, it ensures consistent, accurate readings ideal for aquariums, hydroponics, and daily water quality monitoring.

Specifications

ASIN	B08KXRHK7H
Best Sellers Rank	#240,431 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #43 in Conductivity Meters & Accessories
Brand Name	CQRobot
Current Rating	4 milliamps
Customer Reviews	4.2 4.2 out of 5 stars (238)
Item Highlight	TDS (Total Dissolved Solids) Detector, Ideal for Aquarium, Hydroponics, Household & Daily Drinking Water Testing
Item Weight	0.05 kg
Manufacturer	CQRobot
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
Part Number	CQRSENTDS01
Specific Uses For Product	laboratory, scientific research, teaching, liquid quality analysis, online analysis
Style Name	Modern

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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R533

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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