The Aico Ei1020 Environmental Sensor is a reliable and high-quality monitor that tracks temperature and humidity levels in your home. With a battery backup feature, this device ensures continuous monitoring even during power outages. This Wi-Fi-enabled sensor is compact in size, making it easy to install and use. Powered by a non-replaceable 3v lithium battery, this elegant white sensor from the United Kingdom is a must-have for maintaining a comfortable and secure living environment.