When using the product, it must be paired with a Tuya gateway, otherwise the APP cannot be connected 4. IP67 waterproof, prevents water vapor from entering the inside of the body, good sealing to prevent rust. 5. Suitable for a variety of soil types, can be used in pot plants, vegetable greenhouses, farmland vegetable plots, lawns and other places. 2. Wireless signal transmission, APP can view the data in real time, support remote monitoring of soil data, let you know whether you need to water in the first time. It is more convenient to use with smart irrigator. 3. stainless steel probe, accurate measurement, resistance, electrolysis resistance, stable performance Features: 1. Zigbee Smart Soil Temperature and Humidity Meter, can measure 4 kinds of data at the same time: light level, soil temperature and humidity and air temperature, connect with APP through Zigbee, get all the measurement results with one click, of your garden more easily. Key functions: After a long press for 5 seconds, the device resets. When entering the distribution mode, a short press immediately collects data and reports it.LED indicator light: After the device enters the distribution mode, it continuously flash for 6 seconds. After successful distribution, it continue to light up for 1 second and then turn off. When the data is reported, it light up. Working frequency band: 2. 4GHZTransmission distance: 150m, Weight: 0.6393405598 pounds, Manufacturer: ximie