Features: 100% Brand new and high quality This item can be used in: water purifiers and filters food (vegetable fruits) !#!amp!*! drink quality monitoring pools and spas aquariums hydroponics Specifications: Hold function: Saves measurements for convenient reading and recording Auto-off function: Turns off meter after 10 minutes of non-use to conserve batteries Dual Range: Measures form 0-999ppm with a resolution of 1ppm. From 1000 to 9990ppm the resolution is 10ppm indicated by drinking x 10image Factory calibrated Rang: 0-9990ppm Accuracy: +/-2% Battery: 2 x 1.5V Button Cell battery Item size:156mm x 30mm x 20mm(6.1 x1.2 x0.9in) Net weight:49g Weight:59g Package Included: 1 x TDS Meter Tester Note: Do not drop the entire TDS meter in water of dip beyond the maximum immersion level. This unit is not water-tight and is not covered under the warranty if water enters the unit.It will display only three digits. When the measured results is more than 999ppm the screen display will be "xxx *10". For example 2000 will appear as 200*10 in the screen. aeProduct.getSubject()