The E-Tech RTBR03 router is a wireless router that supports the 802.11b/g/n Wi-Fi standards. It has four 10/100Mbps Ethernet LAN ports and one WAN port. The router has a built-in firewall, supports VPN pass-through, and has WPA/WPA2 encryption for secure wireless access. It also has a web-based configuration utility and supports DHCP and DNS. The compact design and easy setup make it a suitable choice for home and small office use.

The RTBR03 is a router manufactured by the company E-Tech that allows multiple devices to connect to a network and communicate with each other. It works by receiving data packets from devices and forwarding them to their intended destination. The router is assigned a unique IP address 192.168.1.1, which serves as its identifier on the network.

To access the router's settings and configure its functions, users can log in using a web browser and their blank and admin. Once logged in, users can customize various settings such as network name, password, and security protocols. They can also set up parental controls, prioritize bandwidth usage, and monitor network activity.