The effective distance of wifi is as follows:
1. USB wireless network card directly used in the USB interface of the computer, the effective coverage range is generally within 10 meters; Because WiFi devices are small and transmit low power, there is no enhanced \"expansion antenna\". According to the actual test, in the barrier-free distance of about 10m or a layer of glass separated by two walls, it can still be used, but the signal is already very weak. So the distance between the walls of an ordinary house and upstairs and downstairs should not be a problem.
2. The effective distance of the wireless router is about 50 to 100 meters. If there's a wall in the way, the distance drops dramatically. The effective distance from home is within 30 meters. The effective distance of a wireless router depends on the wireless transmission power of your router and network card and the number of important obstacles. According to the IEEE802.11 standard, the maximum distance that a general wireless router can cover is usually 100-300 meters, but the coverage mainly depends on whether the environment is open. When the device has no external antenna, it is at a range of about 300 meters. If it belongs to a semi-open empty room or a partitioned area, the transmission is about 35 ~ 50m. With the help of an external antenna (as a link), the transmission distance can reach 30 to 50 kilometers or even more, depending on the gain of the antenna itself
The effective distance of WIFI is about 90 meters, and you can enter the password to connect. In addition, the effective distance of WIFI is determined by the router, related to the power of the router to send wireless signals, you can enter the Settings of the router to see whether the transmission power is turned on to the maximum, generally about 20 meters in the place where the wall is blocked, the farther the signal is not good, and even the connection fails.
Wifi is short distance wireless broadband name abbreviation, you can watch news text, pictures, images, videos, listen to the first, but the effective distance is very short, about 10 meters.
General home wireless router signal coverage, indoor 100 meters, outdoor 400 meters, is also an ideal value, it will vary with the network environment; Usually indoor in the range of 50 meters can have a better wireless signal, while outdoor generally can only reach about 100-200 meters. The signal strength of wireless routers is also greatly affected by the environment.
The maximum distance that a wireless router can cover is usually 100-300 meters, but the scope of coverage should mainly depend on whether the environment is open or not.
In the case of the equipment without an external antenna, the field of vision is about 300 meters; If it is a semi-open space, or an area with an insulator, the transmission is about 35 to 50 meters
Generally about ten meters, there are many types of WiFi routers produced now, and the effective receiving signal distance of the general home is within about ten meters, and the waifai signal gradually weakens beyond this distance.