The Midea EU-SK105 is a wireless USB module designed to add smart connectivity to compatible air conditioners and dehumidifiers, including Airfel units and specific models like the DF-20DEN7-WF. By plugging this white compact device into the appropriate port, you can manage your home climate remotely using the Midea Air app on an Android or iOS smartphone. This kit operates on the IEEE 802.11b/g/n standard within the 2400 to 2483.5 MHz frequency range, utilizing a printed PCB antenna for a stable connection. It runs on a DC 5V power input with a maximum transmitted power of less than 20dBm, functioning reliably in temperatures between 0°C and 45°C and humidity levels from 10% to 85%. The module comes with a protective cap to keep the connector safe when not in use.