Features 1、For Hydroponic Cultivation: Closely monitors the ppm values for plant growth. Check and adjust the EC value in the hydroponic nutrient solution to assist plant growth. 2、Smart Testing: This instrument can provide accurate readings of water or nutrient solution, maintain the correct EC, TDS, SALT, S.G, TEMP of planting water, and meet the needs of any serious grower. 3、Wide in Utility: Suitable for monitoring PPM levels in plant water, it helps maintain consistency in PPM and balances feeding and watering, keeping plants happy. Suitable for water system hydroponics, greenhouse reservoirs, DWC, hydroponics, drinking water, and well water. 4、With Bluetooth: The water quality tester is equipped with bluetooth, so you can use your mobile equipment and APP for data transmission. 5、Simple Carrying: The lightweight and portable size allows you to easily carry the measuring instrument in your pocket and take measurements anywhere. It can help you test the quality of water, whether you're taking it to a swimming pool, traveling, beach, or camping. Specification Item Type: Water Quality Tester Material: ABS Battery: 2 x CR2032 button battery, shipped without battery. EC: 0-19900us/cm, 0-199.0 ms/cm TDS: 0-19900ppm, 0-199.0ppt SALT: 0-199.0ppt, 0% -20% S.G: 0.990-1.400 Temp: 0℃-50℃, that is, 32℉-122℉. Package List 1 x Water Quality Tester 1 x User Manual