Comprehensive Monitoring: The HM-100 Water Quality Tester is an essential tool for simultaneous measurement of pH, EC, and temperature. Ideal for continuous monitoring in hydroponics, aquariums, swimming pools, and industrial water quality control. Adjustable Features: Features adjustable brightness with four levels, customizable alarm ranges with visual and audible alerts, and an option to store up to six readings. Users can select EC display factors of 0.5 or 0.7 for precise nutrient management. Detailed Specifications: Measures pH range from 0.1 to 14.0, temperature from 0°C to 80°C, TDS up to 9990 ppm, and EC up to 10.00 mS. Offers high accuracy with ±0.1 pH for pH levels, ±1°C for temperature, and ±2% for EC/TDS. Includes Automatic Temperature Compensation (ATC) from 0°C to 60°C. Design and Power: Powered by a 5V/1A source, suitable for environments from 0 to 50°C with up to 80% humidity. Features a robust Electroconductivity Sensor and a single junction /AgCl pH sensor. Plug Type:EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. voltage: AC100-240V Colour:As shown Material:ABS Due to different batches, there may be differences in product appearance and printed text, which not affect use Package Contents: 1 * Water Quality Tester Kit Only the above package content, other products are not included. Note: Light reflection 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.