Our mobile app explains how to configure the Mercusys range extender device. The wifi range extenders are easy to use and setup, which are used to expand the wifi area to the points where the wireless connection has little or no wireless reception by amplifying wifi signals in your home and office. What is in the application content * How to login and setup to the web management page of the Mercusys Range Extender (MW300RE)? (For your security, the default login password of the device should b