Feature:1. Plug and play, have humanized design, easy to install, convenient to use and operate.2. Can be used to measure the TDS value of water, reflecting the cleanliness of the water.3. The electrodes can measure conductive substances, such as suspended solids in water, heavy metals and conductive ions.4. The module has four 3.2mm fixing holes for easy installation on any other equipment.5. Small in size and light in weight, convenient to carry and use at any time, very convenient and practical.Specification:Item Type: Analog TDS SensorInput Voltage: DC 3.3 - 5.5VOutput Voltage: 0-2.3VWorking Current: 3-6mATDS Measurement Range: 0-1000ppmTDS Measurement Accuracy: 10%FS (25)Module Interface: XH2.54-3PElectrode Interface: XH2.54-2PTDS Probe:Number of Needles: 2Total Length: Approx. 83cm / 32.7inConnection Interface: XH2.54-2PColor: White Other: Waterproof probeTDS (Total Dissolved Solids) indicates how many milligrams of soluble solids are dissolved in one liter of water. Generally speaking, the higher the TDS value, the more soluble solids dissolved in water, and the less clean the water.Measuring the TDS value in water is to measure the total amount of various organic or inorganic substances dissolved in the water, in ppm or milligrams per liter (mg/l)..Package List:1 xAnalog TDS Sensor1 x Probe1 x Sensor LineNote:Plug and play, and does not require too many operating steps.