4-IN-1 Plant Soil Test Kit: Test soil moisture (5 levels), PH value (3.5-9.0, 12 levels), sunlight intensity (9 levels) and temperature (-9C to 50C; 16F-122F), which allows you to easily know the condition of the plant. (NOTE: Do not use it to directly test pure water and other liquids) Large backlit LCD display : This soil tester uses a large LCD screen to easily display a variety of readings, and a green backlight allows you to read the parameters in dark conditions. CONVENIENT OPERATION: Plug in a 9V battery, remove the probe protective cover and turn it on, gently insert the probe up and down, the LCD screen will display the four indexes of the detected area. Powered by a 9V battery (not included). Auto power off function saves battery life Indoor and Outdoor 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 soil moisture meter can save time and energy with high efficiency, a great tool for your garden and plant planting. Know when to water, adjust pH or change lighting for your garden, flowers, indoor and outdoor plants.