Soil Sensor: Solar powered; temperature and moisture detection; soil quality (EC) detection; smart scene linkage. Accurate detection of soil temperature and moisture: Monitor plant water needs and temperature conditions. Solar and rechargeable battery powered: High conversion efficiency solar panel; long-lasting power supply with 3 x 1.2V Ni-MH battery. Rechargeable Battery: 3 x AA (1.2V) Standby Current: 86uA Wireless Standard: IEEE 802.11b/g Wireless Frequency: 2.4GHz Wireless Distance: Up to 45 meters Bluetooth Version: Bluetooth 5.0 Waterproof Rating: IP66 Temperature Detection Range: -10°C to 60°C (14°F to 140°F) Temperature Detection Accuracy: ±0.5°C (adjustable) Humidity Detection Range: 0-100% RH (non-condensing) Humidity Detection Accuracy: ±1% RH (adjustable) Conductivity Accuracy: ±3%, 0.01 ms/cm Maximum Range: 20 ms/cm Temperature and Moisture Detection Interval: 5 minutes (adjustable) Operating Temperature: -10°C to 60°C (14°F to 140°F) Operating Humidity: 0-100% RH (non-condensing) Color: As shown Material: Plastic Package Contents: 1 x Tuya Smart Soil Sensor Note: Light reflection and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.