Professional Soil Nutrient Meter Quick-acting Nitrogen Analyzer Fertility Tester for Gardening Agriculture Specifications: Model: LY-607-N Material: ABS Display Mode: LCD display Function: Soil quick nitrogen temperature detection Range: 0-1999mg/kg             -30.0℃~80.0℃ / -22℉~176℉ Resolution: 1mg/kg                   0.1℃; 0.1℉ Electrodes: Replaceable electrodes Temperature Compensation: Automatic compensation Battery Charge: Low battery alert Backlight: Support backlight Power Off: Automatic power off in about 5 minutes Power Supply: 3 * 1.5V batteries (Not included) Use Environment: 0℃~80℃, RH: Max 90% Probe Length: 138mm Item Size: 310 * 35 * 35mm / 12.20 * 1.37 * 1.37in Package Weight: 300g / 10.58oz Package Size: 34.5 * 9 * 5cm / 13.58 * 3.54 * 1.97in