4-IN-1 Plant Soil Test Kit: Test soil moisture (5 levels), pH (3.5 to 9.0.12 levels), sunlight intensity (9 levels) and temperature (-9°C to 50°C; 16°F) - 122°F), letting you know the condition of the plant easily. (NOTE: Do not use it to directly test pure water or other liquids.) Large backlit LCD display: This soil tester uses a large LCD screen to easily display a variety of readings. A green backlight allows you to read parameters in dark conditions. CONVENIENT OPERATION: Plug in a 9V battery, remove the protective cover of the probe and turn it on, insert the probe up and down gently, the LCD screen will display the four indexes of the detected area. Powered by one 9V battery included ). An auto power-off feature helps save 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 of your garden, flowers and plants, both indoors and outdoors.