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 for liquid immersion

📈0-2.3V analog output, high compatibility

$25.53

Duties & taxes included

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Description

💧 Stay ahead in water quality—monitor like a pro, effortlessly!

WATERPROOF DURABILITY - Robust probe design ensures longevity and consistent performance in wet environments.
PLUG PLAY SIMPLICITY - Effortless Arduino & Raspberry Pi integration—no soldering needed.
UNIVERSAL VOLTAGE RANGE - Operates seamlessly between 3.3V and 5.5V, perfect for diverse microcontrollers.
PRECISION TDS MONITORING - Accurate dissolved solids detection with ±10% F.S. at 25°C for reliable water quality insights.
ENHANCED ACCURACY WITH ADS 1115 - Pair with ADS1115 16-bit ADC for ultra-stable readings down to 1 PPM—ideal for pro-grade projects.

The CQRobot TDS Water Quality Monitoring Sensor offers a versatile, waterproof probe with wide voltage compatibility (3.3V-5.5V) and analog output (0-2.3V) designed for Arduino and Raspberry Pi platforms. It delivers reliable dissolved solids measurements with ±10% accuracy at 25°C and achieves enhanced precision when paired with the ADS1115 16-bit ADC module, making it perfect for hydroponics, aquariums, and household water testing.

Specifications

ASIN	B08KXRHK7H
Best Sellers Rank	#308,138 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #66 in Conductivity Meters & Accessories
Brand Name	CQRobot
Current Rating	4 milliamps
Customer Reviews	4.2 4.2 out of 5 stars (236)
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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