Smart Tester: If you have soil tester and water timer at same time, you could set a smart irrigation . When the tester and timer controlled by same gateway, set a programmer to let timer on or off according to the data from soil meter automatic. (water timer Not Included). Intelligent Monitoring: The intelligent monitoring is achieved through Zigbee gateway and intelligent linkage, achieving intelligent monitoring of soil temperature and humidity, viewing dynamic changes, and automatic watering. (Note: This must be connected to the Zigbee gateway to use, the gateway is not included.) Switching Between C and F: Choose your preferred reading unit, Fahrenheit or Celsius. Just open the back cover and the button to switch freely. Long the button to use for distribution network. Check Humidity and Temperature: Check the humidity and ambient temperature of green plants, lawns, and other soil. The top indicator light reminds users to water in a timely manner. Specification: Item Type: Soil Temperature and Humidity Meter Battery: 2 AAA Batteries (Not Included) Temperature: -10~60 (14~140) Humidity: 0-100% How to Connect Zigbee Gateway 1. Install 2 batteries(not included)in soil tester. Turn on Zigbee gateway(not included). 2. Connect App and Gateway. Add Zigbee gateway in Tuya/Smart life if it's first time to use Zigbee accessories. Tips: Tuya can recognize Wifi gateway automatic,Zigbee gateway needs search in App and add by hand. 3. Long the button under batteries(the button to switch between Fahrenheit and Celsius degrees),then App find signal from soil. 4. Finish connect. Color: As Shown Material: plastic Package Contents: 1 x Smart Soil Tester 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.