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

Product ID: 246188282

Details

Brand
CQRobot
Current rating
3 Milliamps
Item weight
0.05 Kilograms
Material
Style
TDS Meter

⚡Wide 3.3-5.5V input

💧Waterproof probe, 54cm cable

📡0-2.3V analog output

$25.79

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Description

💧 Decode your water’s story with precision and ease!

ROBUST RELIABLE - Waterproof probe with AC excitation prevents polarization for consistent readings
PRECISION MEASUREMENT - 16-bit ADC ready for accurate dissolved solids detection
PLUG PLAY SIMPLICITY - Arduino & Raspberry Pi compatible for instant liquid quality insights
VERSATILE VOLTAGE RANGE - Operates smoothly from 3.3V to 5.5V, fitting diverse controller boards
EDUCATIONAL RESEARCH GRADE - Ideal for labs, classrooms, and DIY projects to decode water purity

The CQRobot TDS Meter Sensor is a waterproof, plug-and-play sensor designed for measuring total dissolved solids in liquids. Compatible with Arduino and Raspberry Pi (via ADS1115 ADC module), it operates on a wide voltage range (3.3V-5.5V) and outputs a 0-2.3V analog signal. Perfect for scientific research, education, and online liquid quality analysis, it delivers reliable conductivity-based TDS readings with ±10% accuracy.

Specifications

ASIN	B08KXRHK7H
Best Sellers Rank	111,982 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 55 in Electrodes
Brand	CQRobot
Country Of Origin	China
Current Rating	3 Milliamps
Customer Reviews	4.4 4.4 out of 5 stars (236)
Item Highlight	TDS (Total Dissolved Solids) Detector, Ideal for Aquarium, Hydroponics, Household & Daily Drinking Water Testing
Item Weight	0.05 Kilograms
Manufacturer	CQRobot
Manufacturer Part Number	CQRSENTDS01
Material	PLA_(Polylactic_Acid), PE_(Polyethylene)
Maximum Supply Voltage	5.5 Volts
Measurement Accuracy	[+/- 10% F.S.]
Model Number	CQRSENTDS01
Number of Items	1
Output Type	analog
Sensing Distance	83 Centimetres
Style Name	TDS Meter Sensor

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$25.79

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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