Inline TDS Meter Quick Connect + 1/4 Inch connectors
TDS stands for Total Dissolved Solids, which is any salt, metal or mineral in the water.
With the push of ON/OFF button, it can tell you your overall water purifier level,
extremely easy to operate & Monitor your water quality any time you need.
With TWO 1/4\" quick fittings, it will be able to connect to RO water filter system and continously monitoring the quality of the RO membrane.

Working Temperature: 0-45℃.
Test Range:0- 4999 PPM.
Battery Type: CR2450.
Battery Life: one year replaceable.