4-IN-1 Plant Soil Test Kit: Test soil moisture (5 levels), pH (3.5-9.0.12 levels), sunlight intensity (9 levels) and temperature (-9 ° C to 50 ° C; 16 ° F) - 122 ° F), allowing you to easily know the condition of the plant. (NOTE: Do not use it to directly test pure water or other liquids.) Large Backlit LCD Display: This soil tester uses a large LCD display to easily display a variety of readings. A green backlight allows you to read parameters in dark conditions. CONVENIENT OPERATION: Connect a 9V battery, remove the protective cover from the probe and turn it on, insert the probe up and down gently , the LCD screen will display the four indexes of the detected zone. Powered by a 9 V battery included). Auto power off function saves battery life Interior and exterior design: Ideal tool for testing soil conditions (moisture / light / pH) of fruits, flowers, vegetables, shrubs, etc. . Lightweight and portable design, convenient for indoor and outdoor use. PLANT CARE ASSISTANT: This moisture meter saves time and energy with high efficiency, a great tool for your garden and plants . Know when to water, adjust the pH, or change the lighting in your garden, flowers and plants, both indoors and outdoors.