Application: Water purifiers and filters, Food and drink quality monitoring,
Pools and spas, Aquarium and Hydroponics.
Hold function: Saves measurements for convenient reading and recording.
Auto-off function: Turns off meter after 10 minutes of non-use to conserve batteries
Range: 0-9990 ppm
Resolution: 1 ppm (0-999), 10 ppm (1000-9990)
Battery: 2 x coin cells"