This is aarduinoCompatible withTDSSensor,For measurement of waterTDSThe value of,TDSValues can be of the water of reaction and cleanliness,Can be applied to domestic water, etc in of water quality testing Compatible5V,3.3VTwo kinds of control system The excitation source is an alternating-current signal,Effectively prevent the probe polarization Waterproof probe,Long-term immersion in water measurement ArduinoCompatible,GravityInterface,Simple connection,Plug-and-play,Without welding Signal interface: Input voltage:3.3-5.5V Output signal:0-2.3V Working current: 3-6mA TDSMeasurement range:0-1000ppm TDSMeasurement accuracy: 10 percent F.S.(25 Celsius) Module Interface:PH2.0-3P The electrode interface:XH2.54-2P TDSProbe: Probe number:2 Overall length:83cm Connection Interface:XH2.54-2P Colour: black Material: plastic Size: 4.3x3.3cm Package Contents: 1 x TDS Signal interface 1 x Waterproof TDS Probe 1 x Gravity 3PIN The analog Sensor Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.