In an open area, a wireless security camera may transmit at a range of 250 to 500 feet. The range of a security camera in a closed area, such as inside a house, is 100 to 165 feet. The range of a wireless camera’s signal varies based on the surfaces it must pass through. Since impediments might cause signal degradation, it is essential to have a clear line of sight between the camera and the WiFi router. As may be clear from the WiFi definition given in the previous section, obstructions such as concrete floors and walls reduce signal strength.