3 IN 1 SOIL TESTER: This soil tester kit can test soil moisture, light and pH value. Pull the switch on the tester to switch modes. This is a versatile tool for your gardening and planting SMALL SIZE, SAVE YOUR GARDENING SPACE: It is 10.8 inches long. The monitor is small so you can easily find a proper place to insert it into soil to do your gardening work 2 IN 1 PACK WITH 2 COLORS: We provide 2 soil monitors in this set so you can use them in different areas. One is black and the other is green so you can easily distinguish them PRECISE DETECT RANGE: The moisture range from 1 to 10 (dry to moist). The light intensity from 0 to 2000 (low light to strong light) and the pH level goes from 3.5 to 8 (acidic to 8 basic). Note: It is designed for soil. Please Do Not test water or other liquid EASY TO USE, NO BATTERY NEEDED: The soil moisture meter is durable. It can work without batteries. It is a great supporter for gardeners to know soil more with specific values. If you meet any issue while using them, feel free to contact us and get support