The shielding distance of the device has a great relationship with the power of the device and the use environment, and several aspects that contribute to the shielding effect: one is the output power of the device, the second is the working method of the shield, and the third is the use environment (indoor or outdoor). The fourth is to shield the intensity of the influence of the surrounding environment. So what does the effective blocking range of Portable Cell Phone Wifi Signal Jammer Sj-004G depend on? The power of the machine itself. Nowadays, there are many 5W machines on the market, but the actual power is less than 1W. Therefore, it must be the actual power. For low-power devices within 1W, the shielding distance is about 1-10 meters, and the shielding range is 10-30 square meters. Remember, such a machine cannot go through walls. The density of signal towers near you. Nowadays, many customers buy back their phones. 2G3G calls can be blocked, but 4G cannot be blocked. What is the reason? It's because there are base stations near you. Generally speaking, there is a base station within 100 meters. If you buy a low-power machine, it basically doesn't work because the signal strength of the base station is too strong. It is recommended to buy a mobile phone jammer with a little power, the ratio is more than 2W per channel. cell phone jammer
There was a customer who had a mobile base station on the roof, and said that Portable Cell Phone Wifi Signal Jammer Sj-004G had no effect. No one can solve this. Unless you buy a super-powered machine. Field wall environment. What is the field wall environment? This is where you install the cell phone signal jammer, whether it is a concrete wall or a glass partition. The general shielding device will have no effect through the wall. Like many customers, come to consult us. Children play games alone in the room. Whether there is a partition wall that can be screened, the price is low. In this case, it is very difficult to achieve. Generally, the price of the shielding instrument through the wall is very high, at least above 700. In summary, the shielding range of mobile phone signal jammers is not solved by a single factor. It is recommended that before buying in large quantities, the best way is to test the signal strength of your installation environment with a field wall meter. The other is to buy a few machines with different powers and test them to see how effective they are. Then decide which machine to choose.
