This soil sensor accurately measures soil pH, temperature, environmental humidity, and light intensity level, providing reliable support for flowers and plants sensitive to sunlight, overwatering, or underwatering. - Sensor located on top to prevent obstruction during measurement. Large LCD display with backlight enables easy reading in low-light conditions. - Simple to use: insert the sensor probe into the soil to a depth of 3-4 inches and receive readings within 5-10 seconds. Switch between pH and temperature modes as needed. Selectable Celsius or Fahrenheit units. Note: device cannot be manually turned on; it automatically powers off after 5 minutes of inactivity or can be turned off by pressing and holding the function key. - High-sensitivity aluminum alloy soil probe ensures fast and accurate detection of soil conditions. Durable ABS plastic body construction. - Note: Soil must be compacted before testing pH or temperature to ensure proper contact. For best results, measure soil temperature approximately 30 minutes after watering. Batteries not included—this product does not include dry cell batteries.