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

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.

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.

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