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Home / Computer Hardware, Monitors & Peripherals / pH Sensor Module with Serial Interface - Universal for IoT Remote Water Quality Monitoring and Microcontroller/Arduino Projects

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Interface Type UART Serial (TTL)
pH Measurement Range 0.00 to 14.00 pH
Accuracy ±0.1 pH at 25°C
Operating Voltage 5V DC
Compatible Platforms Arduino, ESP32, STM32, MCU
Probe Connector Standard BNC Interface
Cable Length 100 cm
Response Time Less than 2 minutes
Operating Temperature 0°C to 60°C
Housing Material ABS Plastic

5 reviews

A

Anonymous

Apr 04, 2026

Rating: 5/5

IoT Ready

Exactly what I needed for my remote monitoring station. The UART interface saves GPIO pins on my microcontroller.

A

Anonymous

Mar 13, 2026

Rating: 5/5

Excellent Support

Had a question about the library functions. The support team responded quickly and helped me get it running.

A

Anonymous

Mar 03, 2026

Rating: 4/5

Good Accuracy

The sensor reads consistently after calibration. It took some time to get the calibration right, but once done, it holds well.

A

Anonymous

Feb 06, 2026

Rating: 5/5

Great for Aquaponics

Works perfectly with my ESP32 setup. The serial output is stable and easy to parse. I use it for monitoring my fish tank water quality.

A

Anonymous

Feb 03, 2026

Rating: 3/5

Cable Length Issue

Works well technically, but the cable is a bit short for my deep container setup. Had to use an extension.

5 FAQ

Q: How often do I need to calibrate?

A: We recommend calibration every 2 weeks for continuous monitoring, or before each critical measurement session.

Q: Does it come with calibration powder?

A: No, calibration solutions are sold separately. We recommend using standard pH 4.01 and 6.86 buffer solutions.

Q: Can I use this with Raspberry Pi?

A: Yes, you can connect it via a USB to TTL serial adapter. Ensure voltage levels are compatible.

Q: Is the module itself waterproof?

A: The module electronics are not waterproof. Only the probe head is designed for submersion. Please keep the circuit board dry.

Q: Is the Arduino library open source?

A: Yes, the library is open source and available on our GitHub page for easy integration into your projects.

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