SMS110
Smart pH Monitor with set point range from 3.5 to 7.5 pH

SMS120
Smart pH Monitor with set point rang: from 5.5 to 9.5 pH

SMS310
Smart Conductivity Monitor with set point range from 0.0 to 10.0 mS/cm)

SMS410
Smart TDS Monitor with set point range from 700 to 1900 ppm)

SMS115
Smart pH Monitor with Cal-test button

SMS315
Smart Conductivity Monitor with Cal-test button

SMS415
Smart TDS Monitor with Cal-test button and with 0.7 TDS factor

SMS420
Smart TDS Monitor with Cal-test button and with 0.5 TDS factor