Feature: 1. TDS Module: With this sensor module, you can DIY a TDS tester to easily check the cleanliness of the water. 2. Operation: Has 0~2.3V analogue signal output, also compatible with 5V and 3.3V control systems, practical. 3. Stable Work: The excitation source is AC signal, preventing the probe from polarization to ensure accuracy. 4. Durable Use: Waterproof probe can be immersed in water for a long time, which is also durable for long use. 5. Application: Used for the water quality monitoring of domestic water and hydroponics, very easy to connect. Specification: Item Type: TDS Sensor Module Material: Circuit Board Input Voltage: 3.3~5.5V Output Signal: 0~2.3V Working Vurrent: 3~6mA TDS Measurement Range: 0~1000ppm TDS Measurement Accuracy: ±10% F.S. (25℃) Module Interface: XH2.54-3P Electrode Interface: XH2.54-2P Number of Probe Needle: 2pcs Probe Connection Interface: XH2.54-2P Product Description: This equipment can be used for general household water quality measurement. The TDS value of tap water is within 100, and the TDS value of purified water is within 10. The TDS sensor is used to measure the TDS value of water, and the TDS value can reflect the cleanliness of water and can be applied to water quality testing in the field of domestic water and hydroponics. . Package List: 1 x TDS Sensor Module1 x Cable1 x Probe Note: 1. The TDS probe cannot be used in water above 55℃.2. The TDS probe should not be placed too close to the edge of the container, which will affect the display. 3. The head and lead of the TDS probe are waterproof and can be immersed in water, but the connection interface and signal transfer board are not waterproof. Please pay attention to use.