The turbidity sensor adopts optical principle, which determines the turbidity through combining the transmissivity and scattering rate of liquid solution. Equipped with a waterproof probe, this module is mainly used for the turbidity testing of washing machines, dishwashers and other equipment. And it can also be used on electronic design, graduate design, electronic competition experiments and other applications. Features: 1. This turbidity sensor adopts optical principle to detect the turbidity of liquid solution. 2. This module converts the current signal of the sensor to module output voltage. The lower the output voltage is, the high the turbidity value. 3. The module adopt high quality electronic components, ensuring the accuracy of turbidity measurement. 4. Simple structure, easy to wire and operate. 5. Suitable for turbidity measurement and control of washing machines, dishwashers, industrial controls and environmental wastewater collection. Specification: Model: TSW-20M Working voltage: DC 5V Working current: 11mA Detection range: 0%~3.5%(0-4550NTU) Wiring method: V: DC +5V, G: power supply -, A: analog signal output, D: level signal output Operating temperature: 30~70C, 35-95% RH Storage temperature: -10~80C, 35-95% RH Weight: Approx. 16g Package List: 1 * Turbidity Sensor Module Note: 1. The sensor cannot be completely placed in the water. Only the transparent part can be placed in the water. 2. Be careful not to reversely connect the power supply, or the sensor will be damaged.