How to Use: Insert the device into the area to be tested, press and hold the button for 1 second to display the full screen and then turn it on. After turning on the screen, the screen will start to display the values. The values of multiple parameters will be displayed alternately. The device will automatically shut down after 3 minutes of operation. It can also be turned off when the screen is full. Specification: Item Type: Soil Tester Material: ABS+304 Stainless Steel Weight: Approx. 220g / 7.8oz Product Size: Approx. 17.5x3.9cm / 6.9x1.5in Probe length: Approx. 6.2cm / 2.4in Application Environment: Suitable for a variety of gardening sites, to meet the soil testing work of various planting sites, and can comprehensively care for various flowers and plants. For example: farmland production, soil research, greenhouse planting, orchard nursery, horticultural planting, tree planting, pot planting and other environments. Power supply mode: One lithium battery, 3.7V, 4000MAH (built in battery) Battery life: Use more than 3 years Moisture measurement range: 0 100% Moisture accuracy: 0 53% (±3%)/53 100% (±5%) Moisture resolution: 0.10% Temperature measurement range: 20℃ 60℃ Temperature accuracy: ±0.5℃ Temperature resolution: 0.1℃ Conductivity measurement range: 0 10000us/cm Response time:＜1s Package List: 1 x Soil Tester1 x Manual Note: The probe inserted into the soil is incisive, so take care not to hurt your hands when you take it out and use it.