Battery AA/LR6 1.5V * 3 (replaceable) Wireless Standard IEEE 802.11b/g Wireless Frequency 2.4GHz Wireless Distance 45M Bluetooth Version Bluetooth 5.0 Waterproof Level IP66 Temperature Detection Range -10°F ~ 60°C(14°F ~ 140°F) Temperature Detection Accuracy 0.5°C(Adjustable) Humidity Detection Range 0 ~ 100%RH(Non - Condensing) Humidity Detection Accuracy 1%RH(Adjustable) Temp. and . Detection Interval 5min(Adjustable) Operating Temperature -10 ~ 60°C(14 ~ 140°F) Operating Humidity 0 ~ 100%RH(Non - condensing) Size 78mm X 78mm X 146mm Color: As Shown Material: ABS+UV Package Contents: 1 * soil sensor 1 * screwdriver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.