ZD-EC Soil Tester 
Range: 0.0 – 19.9EC ;
Resolution: 0.10 EC;
Accuracy: +/-0.10 EC(0.0 – 10.0ec);
Operating Temperature: 5 - 45°C (41 - 1113°F) / ATC
EC Calibration: One-point at 6.7ec ( or mS/cm );
Display: LCD with illumination.
Power supply: DC 9V (Battery)
Size: Ø50.5 X 250 mm(electrode)
Weight: 100g
Features: Automatic switch-off function: After about 5 minutes without pushing buttons,
the meter will be switched off automatically .
Used: Soli EC tester features a unique metal surface electrode that
Provides fast and easy on the spot EC measurements for soil and hydroponics nutrient,etc.