Dual-band WiFi module refers to the WiFi module that supports both 2.4GHZ and 5GHz bands. The dual-band WiFi module can operate in the 5Ghz band, which is much cleaner and can easily avoid interfering with each other. The advantage of 2.4G is that it has good ability to penetrate the wall, and the disadvantage is that it is easy to be disturbed. The advantages of 5G are strong anti-interference ability, wide band width, high throughput rate, and strong scalability, but the disadvantage is that 5G is only suitable for indoor small-range coverage and outdoor bridge, and the attenuation effect of various obstacles on it is much larger than 2.4g. Dual Band Router Module,Dual Band Wifi Module,Dual Band Router Embedded Wifi Module,Gigabit Ethernet Router Module Shenzhen MovingComm Technology Co., Ltd. , https://www.movingcommiot.com
On the morning of June 21, the energy-saving publicity week energy-saving 10,000 activities were held in Zhengzhou Greentown Plaza. Zhengzhou City Energy Conservation Supervision Center and Henan Energy Conservation Service Network and other units intend to launch 5,000 non-woven energy-saving shopping bags and 500~1000 energy-saving lamps for free on the theme of energy conservation and environmental protection. Five or six thousand citizens flocked to it. The order of the scene was once chaotic, and the energy-saving lamps and environmental protection bags were robbed without entering the market. The organizers were forced to suspend their activities. The host apologized to the people who lined up on the same day, and said that the free distribution activity will be launched into the community on Saturday and Sunday.
On-site: Most of the teams are old people, some are queued in the middle of the night.
The news of freely distributing 5,000 non-woven energy-saving shopping bags and 500~1000 energy-saving lamps has attracted a lot of public attention. At 8:30 on the 21st, half an hour before the start of the event, the two major squares of the Greentown Plaza were already full of people. Because they did not know the specific place of distribution, some people spontaneously arranged the team. For this reason, there are three or four in the whole square. Team. The reporter saw that one of the teams was a hundred meters long and the majority of the crowd was elderly. Buying food is not allowed to use plastic bags, to bring a shopping bag to go home. An old gentleman was sitting in the ranks on Mazar. He told reporters that he is 81 years old this year.
A police officer on duty told the reporter: I didn't expect the event to be so attractive. Some people came to the queue at 3 o'clock in the morning. Mr. Cao, who is working out in Greentown Square, saw this scene and said: This battle is similar to the previous queue to buy affordable housing.
The reporter noted that more than 100 energy-saving volunteers maintained order in the square.
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Dual-band WiFi module has a stronger and more stable Wifi wireless signal, higher transmission speed, and can make wireless devices more power-saving, to meet the future high-definition and big data wireless transmission needs.
When selecting a dual-frequency WiFi module, we should pay attention to these parameters of the WiFi module: size, package, frequency range, data rate, transmission rate, transmission distance, communication interface, power supply voltage, antenna interface, etc.
Dual frequency WiFi module can well meet the functional needs of users, increase the competitiveness of the product, while the WiFi module is easy to use, can shorten the user product development cycle, speed up the product market! Users can make choices according to actual needs!
Choosing a dual-band WiFi module may need to pay attention to the following points:
(1) Consider the transmission power of the dual-frequency WiFi module
The transmitting power of the WIFI module is generally about 18dBm, and the transmitting power of the high-power WIFI module is about 28dBm.
(2) Transmission rate
Consider whether the dual-band WiFi module supports MIMO technology (that is, allows multiple antennas to send and receive multiple spatial streams simultaneously)
(3) Consider the application interface that dual-band WiFi modules can provide, which is also very important.
(4) According to the requirements of the application scenario to choose the dual-band WiFi module, not the higher the configuration, the better, the application is good, excess waste!