Crafted for precision and reliability, the Arduino EC sensor by MKRian sensors is an excellent choice for your electronic projects. This solid-state sensor is designed to measure water electrical conductivity, offering a stable and accurate voltage output that corresponds to EC reading. Example: If voltage output is 1vdc = 1 EC, 1.2vdc=1.2 EC, 2vdc=2 EC ...etc. No weird voltage outputs. Capable to read up to 10 EC provided you have 12vdc power. Since Arduino provides 5vdc power, reading cannot exceed 3 EC. . Electrode has 10k NTC temperature compensation which can be incorporated with the set up. Works with Arduino or other ADC. Sample sketch and instructions provided. Spec Range: 0-3000uS +/- 2% Power: 5v-12v Output: 0-5v Calibration: Trim pot Connections: 5 pins (two for sensor and three for power and output.) Requires 2 electrode conductivity sensor connected to it (sold as an option ) Temperature compensation: Sensor itself has a 10k NTC Electrode wire length 1 meter. Contact us for multiple quantity OEM special pricing. Made in USA MKRiansensor . com