... , soil salinity Function:Test N,P,K, PH, organic matter, soil PH, soil salinity, with storage and printing function, built-in the ... guidance for fertilizing amount according to needs, with printing function Characteristic:Can quickly test N,P,K organic matter, salinity, and PH ... . Power:Alternating current: 80V- 240V,50HzDirect current: 18V, 5W (With tester) With Printing Function Soil Nutrient Tester