Feature: 1. Multi Functional Design: One device can complete the measurement of soil illuminance, humidity, temperature and horticultural indicators, convenient and practical. 2. Accuracy Measurement: Advanced sensing technology ensures accurate measurement results and provides reliable data analysis. 3. Easy Operation: Easy to understand interface and operation, let you quickly understand the soil condition, provide the most suitable growth environment for plants. 4. Durable and reliable: Strong housing and high grade ABS materials ensure a long service life and adapt to various environments. 5. Professional Gardening Guide: Provide detailed interpretation and advice to help you achieve the best gardening results. 6. Display: Air temperature and soil temperature display, air humidity display, sunshine intensity display, temperature unit °C °F variable, data retention function. Specification: Item Type: 4 in 1 Soil Detector Weight: 215g/7.6oz Material: ABS Product Length: 368mm/14.5in Probe Length: 222mm/8.7in Soil Temperature Range: -20~+70 Degrees Celsius (-4~+158 Degree Fahrenheit) Air Temperature Range: -10~+50 Degrees Celsius (+14 ~+122 Degree Fahrenheit) Air Humidity Range: 20%~99%RH Battery: 1 x 9V 6F22 battery Capacity: 100mAh (shipped with built in battery). Package List: 1 x Soil Detector 1 x Manual