Please rest assured to buy, we will send you the corresponding version according to the usage standards of the country you purchased. Feature: This plant monitor will monitor the air temperature and soil humidity for your plants. Establish a connection to your smartphone via a high efficient Bluetooth 4.1. Works with our gateway, Uses wireless technology to make you monitor your plant's air temperature and soil humidity anywhere. Before installing flower monitor in the ground, be sure to clean the outer surface of the device. Insert soil moisture sensor in the ground not less than 2/3. Ensure maximum exposure to the top of the unit. Check for absence of water on a soil moisture sensor. Please insert it into soil and read after 1-2 miunutes. How to Use1. Download the Smart Life App. 2. Open the Smart Life App. 3. Enter Configuration Mode. 4. Add a Device. 5. Insert in Pot. Specification: Type of Wireless Connectivity: Bluetooth 4.1 Plant Monitor Operating Voltage: 3V Plant Monitor Battery: 2 x AAA Alkaline battery (NOT included) Soil Mositure: 0-100% Air Temperature: -10 - +60C (14-140F) Gateway Voltage: 110-240V ",