Does anyone else use one of these?

Bought one to try it out and compared its reading to another. Works great, easy to read, displays EC/ppm/CF all at once, and never needs to be recalibrated. Now ... the test is seeing how long it lasts. Here's the poop:

KL-2385 CF ECOstick - EC/ppm/CF Meter

The KELILONG stick measures the nutrient strength of a solution. It is essential when growing hydroponics to know what the strength of the solution is before feeding your plants and while they are growing. The KELILONG stick is an all-around conductivity meter. Its rugged chassis and precision components make it accurate every time you use it.

Fully waterproof and simple to use. Just dip the probe end into the nutrient and the unit turns on and off automatically. The reading is instantly displayed on an intuitive and easy to read scale of waterproof LED lights.

Main Features

· Fully waterproof
· Measures EC, CF and PPM scales
· High conductivity measurement for a broad range of
crops
· Factory calibrated, never needs recalibration
· Auto turn on and off
· No external knobs or switches


Measuring Range: 4 - 52 CF
0.4 - 5.2 EC
200 - 3640 ppm

Resolution: 1 CF unit (0.1 EC)

Accuracy: 4%

Temp. 5 - 50°C(32-122F) (ATC)