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SM-1 HM Digital Inline TDS Monitor

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SM-1 HM Digital Inline TDS Monitor

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The SM-1 is an easy way for you to have access to a single TDS measurement anytime. If you know your inlet TDS and it's always the same, then you really only need to know the outlet measurement. The SM-1 will give that to you instantly and constantly. Simply turn the unit on and seconds later the large LCD will show you your TDS level. Stop guessing when your RO membrane needs to be replaced and know it the scientific way.

  • Basic TDS meter for those who want to know the numbers
  • Easy quick connect installation
  • Auto shut-off to conserve battery life
  • Genuine OEM Product


Package Qty 1
Used In Brands HM Digital
Manufacturer's Id SM-1
UPC 799705707214
Actual Size (in) 3 inches (height) x 4/5 inch (width) x 1 9/10 inches (depth)
Actual Size (cm) 7.62 x 2.286 x 4.826
Fitting Type Quick Connect
Fitting Size (inches) 1/4 inch
Power Requirements 2 x 1.5V Button Cell Batteries (included), Battery Life: Approximately 1,000 Hours Continuous Use
Warranty Guarantee 1-Year Limited Warranty
Includes TDS Monitor, Two Batteries
Additional Information Range: 0-9990 ppm, Conversion Factor: NaCl (avg. 0.5), Cable Length: 24.5-inch (including sensor), Accuracy: 2%


The HM-DIGITAL-SM-1 is comparable with the following part numbers