TDS (Total Dissolved Solids) indicates how many milligrams of soluble solids are dissolved in one liter of water. In general, the higher the TDS value, the more soluble solids are dissolved in water, and the less clean the water is. Therefore, the TDS value can be used as one reference point for ref..
Water Quality Sensor TDS Water Quality Testing Probe detects the Total Dissolved Solids (TDS) levels in the water which can be used to indicate the water quality.It supports 3.3/5V input voltage and 0 ~ 2.3V Output Voltage making it easy to be compatible with all Arduino Boards.Features: ..