["Feature:r -Provide with EC,CF and ppm scalesr - waterproofr -Flashing analogue display,easy to readr -No external switches or adjustment knodsr r Specifications:r Measuring range: 4-52CF / 0.4-5.2EC / 200-2600ppm(EC x 500) / 280-3640ppm(EC x 700)r Resolution: 1CF / 0.1EC / 50ppm 500 / 70ppm 700r Accuracy: 4% of readingr Calibration: Factory Calibratedr Auto Sense:Auto On and Auto Offr Working temperature: 5-50C (41-122F)r Power: 31.5v AA Batteriesr Dimension: 4152626mmr r How to use:r Using the stick measure nutrient conductivity involves warming the probe sensor for head in the solution, followed by measuring and reading conductivity values on the stem scale indicator light.r 1.Warm Sensor for Head, place probe for head into solution for 1-2 minutes to reach the nutrient temperature.r 2.Measure Conductivity, Briefly remove stick from solution then place it back for 1-2 secondsr 3.Read Conductivity Values,Remove stick from the solution and read indicator light values on stemr 4.Obtain Another Reading,To take another reading,allow the stick to switch off and then repeat the above procedure.r 5.Rinse the probe after use and place protective cap back onr 6.Clean regular to ensure meter remains accurate.r r Package include:r 1 * Nutra-Wand Conductivity Meterr 1 * User Manual"]