This is an Arduino-compatible TDS Meter Kit for measuring the TDS value of thewater, to reflect the cleanliness of the water. It can be applied to domesticwater, hydroponic and other fields of water quality testing. You may also checkLiquid Senser Selection Guide to get better familiar with our liquid sensorseries.TDS (Total Dissolved Solids) indicates how many milligrams of soluble solidsdissolved in one liter of water. In general, the higher the TDS value, the moresoluble solids dissolved in water, and the less clean the water is. Therefore,the TDS value can be used as one of the references for reflecting thecleanliness of the water.TDS pen is widely used equipment to measure TDS value. The price is affordable,and it is easy to use, but it is not able to transmit data to the control systemfor online monitoring to do some water quality analysis. The professionalinstrument has high accuracy and can send data to the control system, but theprice is expensive for ordinary people. To this end, we have launched an analogTDS sensor kit that is compatible with Arduino, plug, and play, easy to use.Matching with the Arduino controller, you can build a TDS detector easily tomeasure the TDS value of liquid.This product supports 3.3 ~ 5.5V wide voltage input, and 0 ~ 2.3V analog voltageoutput, which makes it compatible with 5V or 3.3V control system or board. Theexcitation source is an AC signal, which can effectively prevent the probe frompolarization and prolong the life of the probe, meanwhile, increase thestability of the output signal. The TDS probe is waterproof, it can be immersedin water for long time measurement.This product can be used in water quality applications, such as domestic water,hydroponics. With this product, you can easily DIY a TDS detector to reflect thecleanliness of water to protect your health.Features:- Wide Voltage Input: 3.3-5.5V- Good Compatibility Output: 0-2.3V analog signal output, compatible with 5V or3.3V controller- AC Excitation Source: effectively prevent the probe from polarization- Waterproof Probe- Easy to Use: Arduino compatible, simple connection, plug and play withoutsolderingSpecifications:- 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 degrees Celsius)- Module Size: 42 x 32mm- Module Interface: PH2.0-3P- Electrode Interface: XH2.54-2PTDS probe- Number of Needle: 2- Total Length: 83cm- Connection Interface: XH2.54-2P- Color: Black- Other: Waterproof Probe