Soil sensor-measures and monitors the temperature and humidity of the soil, which helps the growth of plants. The measuring range of soil temperature is 14℉~140℉, and the measuring range of soil moisture is 0%~100%. Intelligent application control-if the sensor detects that the soil moisture exceeds the alarm value, the watering timer will automatically stop watering. You can manually set this value. And it can record the soil temperature and humidity of the last 10 days, and display them in the compatible withm of graphs on the App compatible with easy viewing. Easy to use-Connect the soil temperature and humidity sensor with the smart irrigation timer through the mobile phone APP through BT. -sturdy plastic housing and stainless steel probe, with IP65 waterproof rating, durable and long service life. Long battery life-using 4 AAA batteries (not included), it can be used compatible with one year without frequent recharging and replacement. Material:plastic colour:green Package Contents: 1 x Soil Moisture Sensor Only the above package content, other products are not included. Note: Light shooting 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.