The Paleoer 300M Wi-Fi Repeater RPT-004 Range Extender E20 is a device that helps to extend the range of a Wi-Fi network. It is a black unit that operates on a 2.4 GHz frequency band and supports a maximum wireless data rate of 300 Mbps. The device has dual-band features and is designed to work with the 2.4G cellular network technology. It has two LAN ports and is compatible with units that have a maximum LAN data rate of 300 Mbps. The unit is manufactured in China and comes with no manufacturer warranty.