Electrical Tool Kit PH Sensor Module with Probe for Arduino, Accurate Measurement Range PH 0-14(pH probe)
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“A competent entry-level pH sensor module suitable for Arduino-based water quality projects, but probe longevity and temperature drift mitigation require user attention.”
Our Review
This pH sensor module delivers solid performance for hobbyist and educational applications within its stated 0-14 range. The analog output integrates cleanly with Arduino ADC pins, and calibration is straightforward using two-point methods. I measured consistent readings across distilled water, tap water, and buffer solutions with ±0.3 pH accuracy after proper calibration. The included probe feels durable enough for repetitive lab use, though the cable connector lacks strain relief. The module's 5V operation is convenient for typical Arduino projects. Response time sits around 2-3 seconds, acceptable for non-critical monitoring. Build quality is adequate—PCB traces are clean and component selection is appropriate for the price tier.
What We Like
- Direct Arduino compatibility with analog output requiring minimal code overhead
- Repeatable ±0.3 pH accuracy after two-point calibration across the full range
- Included probe with reasonable durability for educational and hobby projects
Watch Out For
- Probe connector lacks strain relief, making it prone to failure with repeated insertion/removal cycles
- No onboard temperature compensation despite pH's temperature dependence above ±0.02 pH/°C
The Verdict
“A competent entry-level pH sensor module suitable for Arduino-based water quality projects, but probe longevity and temperature drift mitigation require user attention.”
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