The current KTV bars, hotels and other large majority of installed indoor high-definition LED display, outdoor led display outdoor media advertising has occupied 80% market share, becoming a new carrier outdoor media advertising. Here we have to take stock of several common radio control LED display mode.
The uncomprehending LED display for you, below are some common wireless control modes
1. RF wireless control
Working principle： RF module at one end to the control computer, and the other end connected to the control card serial port, install the driver after the computer generates a virtual serial port, and through this serial port to send data.
Feature： Easy installation, data transmission distance up to 300-1000 meters, the latter use without charge.
Devices required and Pricer transmission and reception module, about USD60 a pair. It supports many transmissions, that is, a module for transmitting a plurality of receiving modules.
Drawback frequency band, few countries allow civilian to use, the bulk of 433MHZ, extremely susceptible to interference signal, and in this way the transmission rate is not low, the baud rate can only be used in 4800 or 9600, it is not recommended.
2. WIFI wireless control
Working principle：Through the installation of a wireless router or other wireless devices, and the user’s original wireless network bridge, build a wireless local area network, and convenient control of the network into a wireless network card, wireless network control.
Feature：No wiring, easy installation, data transfer speedy.
Devices required and price： Bridge, less than USD123; wireless router, the price is USD16.
Drawback Communication distance mainly depends on the gain ability of the network bridge, the communication distance of wireless communication route is relatively short, partition signal is weak or no signal. There are places suitable for short-distance wireless signal. If you do have a display area where the wireless signal coverage, it’s even easier, wireless router, bridge within only need to monitor and control card is connected to receive on your wireless network, you can, including any computer network on the control display.
3. GPRS wireless control
Working principle：GPRS module completes the Power after the dial-up process, the connection to the data center server, the client to access the server through the client software, the information forwarded by the server.
Feature ：Easy installation, no distance limitations, as long as there is cell phone signal where you can receive information, and the price is relatively cheap, generally $31 to $ 61 range.
Drawback： G PRS modules need to assemble a phone card to dial-up Internet access, a monthly fee will have some traffic (such as China Mobile, the lowest $1 package to meet the traffic demand). By GPRS bandwidth limitations, slightly slower transfer rate, so that more suitable for single color led display major broadcast text.
4. 3G(WCDMA) wireless control
Working principle： 3G modules are connected through a wireless network to the data center server, the client direct landing global network cloud platform release program, transmitted from the server directly to the control card.
Feature： WCDMA signal stability, in the course of the program transmitted with virtually no loss of data, as opposed to GPRS is a faster rate, you can send pictures or videos, more suitable for full color LED screen.
Drawback：China Unicom mobile signal coverage is not so high, it is possible in some remote areas there will be circumstances beyond networking.
5. 4G Full Netcom wireless control
Working principle：Basically similar with the 3G and GPRS
Feature：4G Full Netcom, fast transfer rates, full real-time control, sends instructions can instantly respond to the associated control.
