Displays TDS level of triple water line.<br> Highly efficient and accurate due to its advanced microprocessor technology.<br> Auto-Off function conserves battery power. The unit shuts off automatically after 10 minutes of non-use.<br> Wide Range 0-9990 ppm (From 0 - 999 ppm the resolution is 1 ppm. From 1000 to 9990 ppm, the resolution is 10 ppm, indicated by a blinking 'x10' image.)<br> Factory Calibrated:our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver.<br> TRM1 Triple TDS Meter with three probes.<br> Comes equipped with Mur-lok Quick-Connect T-fitting (14 inch standard, also available in 38inch or 12inch ).<br> Installs quickly and easily.<br> Specifications:<br> Range:0-9990 ppm<br> Accuracy:2%<br> Conversion Factor:NaCl (avg. 0.5)<br> Cable Length:24.5inch (including sensor)<br> Fittings:14inch standard, also available with 38inch or 12inch<br> Power source:2 x 1.5V button cell batteries (LR44 or equivalent; not included)<br> Battery life:approx. 1000 hours of continuous use<br> Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use<br> Colour:Photo Color<br> Material:plastic<br> Package Contents:<br> 1 x Water Quality Purity Tester<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +- 1-3cm.