DFRobot Gravity Analog TDS Water Quality Sensor/Meter for Arduino
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The DFRobot Gravity Analog TDS Water Quality Sensor is an Arduino-compatible sensor designed to measure the Total Dissolved Solids (TDS) in water, offering a practical way to monitor water cleanliness.
This easy-to-use TDS sensor is ideal for domestic water testing, hydroponics, and other water quality applications, helping you build your own DIY water monitoring system. With a wide voltage input range (3.3V to 5.5V) and analog voltage output (0–2.3V), it is compatible with most 3.3V or 5V microcontrollers.
Unlike traditional TDS pens, this sensor transmits real-time data to your control system. It uses an AC signal to reduce probe polarization, extending its lifespan and improving measurement stability.
Waterproof and durable, the TDS probe can be immersed long-term, making it perfect for continuous water quality analysis.
| Component | Specification |
|---|---|
| Signal Transmitter Board | |
| Input Voltage | 3.3 ~ 5.5V |
| Output Voltage | 0 ~ 2.3V |
| Working Current | 3 ~ 6mA |
| TDS Measurement Range | 0 ~ 1000ppm |
| TDS Measurement Accuracy | ±10% F.S. (25 ?) |
| Module Size | 42 × 32mm |
| Module Interface | PH2.0-3P |
| Electrode Interface | XH2.54-2P |
| TDS Probe | |
| Number of Needles | 2 |
| Total Length | 83cm |
| Connection Interface | XH2.54-2P |
| Color | Black |
| Other | Waterproof Probe |
This product comes with a 1-year manufacturer warranty from the date of purchase, covering manufacturing defects only.
The product shows signs of physical damage, mishandling, exposure to water/moisture, fire, natural calamities, unauthorized repairs, improper storage near heat or direct sunlight, or alteration in any way.
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