A Wi-Fi repeater is used in houses that have a dropped signal on their routers. When you are using a wireless router on your computer system, the router broadcasts the signal through the home. Walls, flooring, pipes and other electronics can inhibit this signal from reaching the entire home. A Wi-Fi repeater repeats the signal through the house to give you more coverage of the home. Installing the Wi-Fi repeater in your home doesn't require an expert. You can do it yourself.
Set the repeater next to your wireless router. Make sure the antenna is pointed straight up in the air.
Connect the power cord to the backside of the wireless repeater, then plug the power cord into the wall. On repeaters this will be a simple power plug. On other repeaters you will need to slide the power plate into the back of the repeater.
Flip the lid to the Ethernet cable port up, then plug the Ethernet cable into the Ethernet port on your repeater. On some models, this will just be a bare port. Plug the other end of the Ethernet cable into the Ethernet port on your wireless router.
Insert the software for your repeater into the optical drive on your computer. Wait for the software to load. Choose your wireless network from the list of wireless networks in range of the repeater.
Enter your wireless network password so the repeater can access your network. Click the "Finish" button on the software screen to complete the installation.