The Extech EC150 is a waterproof pen-style meter that measures conductivity, TDS, and temperature with simultaneous readout display. It features two ranges for conductivity (0-1999µS/cm and 0-19.99mS/cm) and TDS (0-1999ppm and 0-19.99ppt) with one-point calibration per range. Accuracy ±1% FS. The adjustable conductivity-to-TDS ratio factor from 0.4 to 1.0 conveniently calculates TDS values. Temperature measurement range 32-122°F with ±0.9°F accuracy.

The IP65 waterproof design withstands wet environments. Large 3-1/2 digit (2000 count) LCD display. Data hold, low battery indication, and auto power off with disable function. Includes meter, protective sensor cap, and 4 LR44 batteries.