Four-in-one soil moisture meter: This is a versatile tool for gardening, agriculture, and outdoor use. It has four functions: it measures soil moisture, temperature, pH, and sunlight intensity. Backlit LCD screen: It has a backlit LCD screen for easy reading in low light. The soil should be compacted and watered for half an hour before testing the pH, otherwise the probe will not work. Easy to use: Insert the probe 7.5 to 10 cm into the soil and wait 5 to 10 seconds to get a reading. You can easily switch between pH/temperature, and the unit is available in both Celsius and Fahrenheit. pH measurement: Insert the probe to a depth of 10 cm and wait 1 minute. If multiple measurements are needed, different probe positions should be used to get a more accurate pH reading. Accurate and durable: The high-sensitivity aluminum alloy soil probe allows for faster and more accurate soil condition detection, while the ABS casing ensures the device is robust and durable. Wide range of applications: With its portable design, it can be used for potted plants, container plants, gardens, etc. NOTE: This device is only intended for use with soil, not with sawdust, stone, powder, granules, or organic material. The tester is powered by 4 AAA batteries (NOT INCLUDED), making it easy to use and maintain. The product automatically shuts off after approximately 5 minutes of inactivity.