Which router has the best wall penetration effect? ​​Wireless router pit prevention guide

When buying a wireless router, the first thing to do is to identify which router has good wall penetration. Faced with the various routers on the market, many novices are confused when they see the complicated parameters and are fooled by unscrupulous merchants. It is better to teach a man to fish than to give him a fish, so I wrote a guide for you to identify which router has good wall penetration to avoid being deceived.

The wall penetration effect we are talking about actually refers to the size of the wireless coverage range. The wireless coverage range is mainly affected by the wireless transmission power, gain, frequency band, and the material and thickness of the walls in the environment.

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Wireless transmission power

The wall penetration effect of a router is largely related to the wireless transmission power of the router. Generally speaking, the higher the wireless transmission power, the better the wall penetration effect. However, the state has clearly stipulated that the transmission power of wireless routers shall not exceed 100mW. The electromagnetic radiation emitted by routers exceeding this value will cause damage to the human brain nerves. Some unscrupulous merchants promote that their routers have good wall penetration effect, which is either false propaganda or violation of national regulations. You can choose whether to choose signal or life.

Router Antenna Gain

If you want to buy a router that has good wall penetration, you need to understand wireless gain. In theory, the greater the antenna gain, the farther the signal propagates. Common gains on the market are 3dBi, 5dBi or 7dBi. The larger the value, the greater the gain and the farther the propagation. However, this gain is propagated linearly, and the greater the gain, the narrower the coverage area, so the antenna gain is not the greater the better.

Fortunately, there are smart routers with "beamforming" technology on the market (such as Xiaomi), which can enable the wireless router transmitter to transmit in a directional manner according to the location of the receiving end, and transmit wireless signals more intelligently and accurately to where the user needs them.

2.4Ghz band or 5Ghz band

It is not difficult to find that many wireless routers are in the 5G frequency band. So, are the routers with 5G frequency band good at penetrating walls? In fact, 2.4G is better than 5G in terms of penetration. The advantage of 5G is that the transmission distance is farther than 2.4G, and it can transmit more information. If the space is relatively large, it is recommended that you buy a dual-band router (supporting both 2.4G and 5G).

Wall material and thickness

If your home has no walls and is made of cement, then no matter how many walls a router can penetrate, it will have nothing to do with you. If there are two load-bearing walls, even a high-power router will greatly attenuate the signal. So when buying a router, it is best to know how many walls there are in your home and how many load-bearing walls there are. If there are too many walls, you can install a wifi signal amplifier to extend the signal.

Don't read it wrong, the "M" is not "meter"! Please note! The 1200M or 300M router promotional titles we see on e-commerce websites do not refer to how many meters the model can transmit, but the transmission speed is 1200M or 300M. Don't be confused by this number.