Attributes

Brand	-
Category	Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin	-
Input Voltage	3.3V - 5.5V DC
Output Signal	Analog Voltage (0-2.3V)
Interface Connector	PH2.0-3Pin
Measurement Range	0 - 1000 ppm
Accuracy Level	±10% F.S.
Operating Temperature	0°C - 50°C
Probe Cable Length	1.5 meters
MCU Compatibility	Arduino, STM32, 51 Series
PCB Dimensions	42mm x 32mm
Net Weight	45 grams

5 reviews

Anonymous

Mar 26, 2026

Rating: 4/5

Good sensor, needs calibration

Hardware is solid. You definitely need to calibrate it with known solutions to get accurate ppm readings. Good value for money.

Anonymous

Feb 19, 2026

Rating: 5/5

Reliable for education

Bought 10 for our workshop. All units performed consistently. Great for teaching water quality basics without breaking the budget.

Anonymous

Feb 13, 2026

Rating: 5/5

STM32 Compatible

I used this with an STM32F103 board. The 3.3V logic level works fine. Code examples online were helpful for getting started.

Anonymous

Jan 23, 2026

Rating: 5/5

Perfect for my hydroponics setup

Works exactly as described. Easy to interface with my Arduino Uno. The analog output is stable after warming up for a few minutes.

Anonymous

Jan 18, 2026

Rating: 3/5

Instructions lacking

The sensor works but the included manual is very basic. Had to search forums for calibration code. Otherwise functional.

5 FAQ

Q: Can I use this with 5V Raspberry Pi?

A: The Pi uses 3.3V logic for ADC. You may need an external ADC chip like ADS1115 for best results to avoid damaging the GPIO.

Q: How often should I calibrate?

A: We recommend calibration every few weeks depending on usage frequency and the type of solution being measured.

Q: Is the probe submersible?

A: Yes, the probe is designed for liquid immersion, but the circuit board itself is not waterproof and should be kept dry.

Q: Can this measure saltwater?

A: It can detect high TDS in saltwater, but extreme salinity may exceed the 1000ppm range accuracy specifications.

Q: What is the maximum current draw?

A: The module typically draws around 5mA during operation, which is suitable for most microcontroller pins.

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