What is 2.4g wireless module? 2.4G Router Module,M2 Wifi Module,2.4 Ghz Wifi Module,Mini Wifi Module Shenzhen MovingComm Technology Co., Ltd. , https://www.movingcommiot.com
Enterprise production and sales value, product output data source: National Bureau of Statistics; statistical caliber: annual main business income of 5 million yuan and above enterprises.
Import and export value data source: General Administration of Customs.
The national customs import value of the lighting industry in September and September
(1) Lighting equipment products
Incandescent bulbs: The number of imports in September was 170.61 million; the total number of imports in the first nine months of this year was 936.498 million, compared with 159.883 million in the same period last year, the year-on-year growth rate was -41.7%.
Fluorescent lamps and discharge lamps: In September, the number of imports was 85,039,300; in the first nine months of this year, the total number of imports was 6,942,278, compared with 57,501,200 in the same period last year, with a year-on-year growth rate of 21.69%.
Tungsten halogen lamps: The number of imports in September was 7,537,800; the total number of imports in the first nine months of this year was 94,411,900, compared with 21,341,900 in the same period last year, the year-on-year growth rate was -55.76%.
Metal halide lamps (HID lamps): The number of imports in September was 814,200; the total number of imports in the first nine months of this year was 6,274,300, compared with 14.53 million in the same period last year, with a year-on-year growth rate of -56.84%.
Other electric light sources: The number of imports in September was 1,796,700; the total number of imports in the first nine months of this year was 7,934,300, compared with 564,160 in the same period last year, with a year-on-year growth rate of 40.64%.
Electric light source parts: The import quantity in September was 304.91 tons; the total import volume in the first nine months of this year was 2822.34 tons, compared with 2287.99 tons in the same period of last year, the year-on-year growth rate was 23.35%.
(2) Lighting products
Luminous signs, nameplates and similar products: the import volume in September was 6.22 tons; the total import volume in the first nine months of this year was 141.65 tons, compared with 111.22 tons in the same period last year, the year-on-year growth rate was 27.36%.
Parts of lamps and lighting fixtures: The number of imports in September was 610.57 tons; the total number of imports in the first nine months of this year was 5944.29 tons, compared with 6012.28 tons in the same period of last year, the year-on-year growth rate was -1.1%.
Ballasts for discharge lamps or discharge tubes: In September, the number of imports was 2,353,100; in the first nine months of this year, the total number of imports was 17,826,800, compared with 1,974,400 in the same period last year, with a year-on-year growth rate of -0.65%.
Lamp holders: In September, the number of imports was 11.14 million. In the first nine months of this year, the total number of imports was 181,832,300, compared with 10,973,300 in the same period last year. The growth rate was 8.29%.
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2.4g line module operating frequency in the range of 24400-2484mhz, can communicate through the scanning protocol, air rate up to 1Mbps, output power up to +4dBm, the module has the advantages of low power consumption, cost-effective. Movingcomm's current 2.4g antenna modules are: IOT04, IOT05, IOT09, IOT18, IOT60, etc. Users can choose a variety of modules with a transmission distance of 50-500 meters according to cost considerations.
Second, the role of 2.4g wireless module
Function 1, for the formation of a star topology wireless communication network, and must be a multi-point star topology, some extraordinary places need wireless communication. On the one hand, the transmitting and receiving module is cheap, and the cost of forming the star topology is relatively low. On the other hand, the transmitting and receiving module can adopt the modular design, which is small in size, easy to use and easy to integrate. For the wireless network with low communication speed and close distance, the transmitting and receiving module is very practical.
Function 2, for wireless multi-channel (parallel) control. Such as complex remote-controlled robots, some places require multi-channel (parallel) control. One method is to use the receiving module to directly connect to the decoder, and then connect to the relays and other electronic components to drive the subsequent controlled object; the other method is to use the receiving module to connect to the single chip microcomputer, and after the data is disposed of, the single chip microcomputer is connected to the relays and other electronic components to drive the subsequent controlled object. Usually a pair of transmitting and receiving modules can achieve up to six parallel wireless control, if the required number of channels is greater than six, you can use multiple pairs of transmitting and receiving modules, and work at the same time to meet the actual needs.
Function 3, used for general serial port, RS232 antenna data transmission, there are usually many control instruments and equipment using serial port, and communication with these devices must meet the requirements of serial port. In some extraordinary places, when the industrial control site must use the antenna transmission mode, it is natural to choose the transmitting and receiving modules mentioned in this article, but it must be explained here that to use this communication mode, the corresponding software must be prepared at the transmitting end and the receiving end respectively to achieve the conversion of file formats, in order to achieve the purpose of wireless communication, if the communication system is full-duplex. It can be achieved by using two pairs of transmitting and receiving modules, working simultaneously.
Third, 2.4g wireless module application field
2.4G wireless module is widely used in wireless health sports products, wireless mouse and keyboard, product information push, wireless remote sensing, wireless ranging system, alarm security system, smart home, toy control, tire pressure monitoring and other fields. With the 2.4G wireless module, all the whole house wireless smart home can be linked together, you can control all the smart home devices through the link of the network, and then you can control the switch of all the whole house wireless home, adjust the brightness of the lamp, adjust the rise and fall of the curtain, etc., through the continuous innovation of technology, The whole house wireless smart home can be controlled by a small white robot voice, can be controlled by a smart scene panel, can be controlled by sensors and so on.
Four, 2.4g wireless module how to choose antenna
In general, the 2.4g wireless module requires an impedance of 50 ohms, a red wire used with 2.4g, a 2.4g folded rod antenna, a 2.4g gold-plated straight head rod antenna, a 2.4g gold-plated elbow rod antenna, and a 2.4g small suction cup antenna. These antennas are special antennas designed for 2.4g wireless communication system, antenna standing wave ratio performance is good, small size, clever structure, easy installation, stable performance, with good anti-vibration and aging ability.