Specifications: Frequency: B-Europe: 868MHz Power: 1x1.5V AA battery (not included) Sensor type: Epoxy Sealed Thermistor of Wireless transmitting range: 100M(300feet) Sensor reporting interval: 77 seconds Sensing temperature: -40~60 °C(-40~140°F) Probe sensor length: 30cm(11.81inch) Waterproof level: IP65 Battery life: 12 months minimum Material: plastic+metal colour: white Package Contents: 1 x Soil Temperature Sensor 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. High Accuracy Temperature Measurement: The WN34S Soil Temperature Sensor provides accurate temperature readings, ensuring that you can monitor the temperature of your soil with ease. and Long-Lasting: Made from high-quality materials, the WN34S Soil Temperature Sensor is built to last. Easy to Use: With its simple and intuitive design, the WN34S Soil Temperature Sensor is easy to use. View temperature reading on the Live Data page of the app(requires that the gateway and your phone are using the same Wi-Fi network). Or View temperature data in real-time on the Display.Up to 8 channels supported. Channel names can be on the app or on the console.Battery level information displayed on the app or on the console. Soil temperature tester with 30cm(11.81inch) stainless steel probe sensor for potted plants, greenhouse, lawn, farm, garden.Help you know the soil temperature more clearly and accurately, so that your plants can grow better.