Brand: Govee Are Batteries Included? No Power Source Ac/Dc Number of Batteries 2 AAA batteries required. (Not included) (Only supports connection on 2.4GHz Wi-Fi) Must be able to install the Govee App About this item Monitor Remotely From Anywhere: Connect the thermohygrometer gateway to your 2.4 GHz WiFi network to monitor temperature and humidity remotely via Govee Home App, so you're always informed no matter at home or on the go. Smart App Alerts: Govee Home App pushes alert notifications once temp and humidity readings exceed or fall out of your preset range. Know when to take action to protect plants, pets, or other valuables when temperatures suddenly rise or drop. Accurate Swiss-Made Sensor: Understand your environment when it really matters. Measures temperature accurate to within ±0.54℉ (±0.3℃) and humidity ±3%RH with a total working range of -4℉ to 140℉ (-20℃ to 60℃) and 0% - 99%RH. Data Storage & Export: View data in easily-glanceable curve graphs for a powerful tracking of temp and humidity change over time. 2 years of free cloud data storage, plus fully exported data in CSV format for further analysis and saving. Suitable for Indoor and Outdoor Use: The WiFi gateway (IPX5) and temp sensor (IPX4) are both water-resistant and ready to use whenever and wherever you need. 433MHz pairing for 196ft (60m) stable transmission range between the gateway and sensor. Please note: This does not come with original packaging