1COMPATIBLE CONTROL SYSTEM: 0~2.3V analog signal output, water conductivity sensor is compatible with 5V and 3.3V control systems 2POLARIZATION PREVENTION: Adopts the excitation source as the AC signal, can effectively prevent the probe from being polarized 3LONG TERM USE: Waterproof probe can be immersed in water for a long time, with excellent workman and long service life 4SIMPLE OPERATION: This water conductivity sensor is easy to connect, plug and play, no welding required, and is easy to use 5WIDE APPLICATIONS: The water conductivity sensor can be used for water quality testing in the fields of domestic water, hydroponics, etc. Item Type: WaterConductivitySensor Material: PCB Wide Voltage Operation: 3.3~5.5V Input Voltage: 3.3~5.5V Output Signal: 0~2.3V Working Current: 3~6mA TDS Measurement Range: 0~1000ppm TDS Measurement Accuracy: 10% F.S. (25 C) Module Interface: XH2.54-3P Electrode Interface: XH2.54-2P TDS Probe:Number of Probes: 2 Overall Length: Approx. 60cm / 23.62in Connection Interface: XH2.54-2P Colour: White 1 x Water Conductivity Sensor1. Probes cannot be used in water above 55C.2. The position of the probe should not be too close to the edge of the container, otherwise will affect the indication.3. The head and wires of the probe are waterproof and can be immersed in water, but the connection interface and signal transmission board are not waterproof.