The LED display is a perfect combination of technology and media. It can fully show the concept of dreams, technology, trends, and fashion, and it can become a new force of stage beauty. Indoor and outdoor advertising forms continue to appear, from traditional LED billboards, to monochromatic word screens, to today's full-color LED displays. With the development of the LED display industry, outdoor media advertising forms have become more and more trendy and fashionable.

At present, most of the KTV bars, hotels, etc. are installed with indoor high-definition LED displays, while outdoor LED displays have accounted for 80% of the outdoor media advertising field, becoming a new carrier of large-scale outdoor media advertising. Below we will take stock of several common wireless control LED display methods.

01: RF wireless control

One end of the RF module is connected to the control computer, and the other end is connected to the serial port of the control card. After the computer installs the driver, a virtual serial port is generated and data is sent through this serial port. It has the characteristics of convenient installation and debugging, data transmission distance of up to 300-1000 meters, and no cost for later use.

Required equipment and price, RF sending and receiving module, about 350 yuan for a pair. Support one-to-many sending, that is, one sending module to multiple receiving modules. Disadvantages: There are not many radio frequency bands allowed by the country. This batch of 433MHZ is extremely susceptible to signal interference, and the transmission rate of this method is not very low. The baud rate can only be used at 4800 or 9600, which is not recommended.

02: WIFI wireless control

By installing a wireless router or other wireless equipment to bridge the user's original wireless network and build a wireless local area network, it is convenient to integrate the network control card into the wireless network for wireless network control.

Features: No wiring required, easy installation and debugging, and fast data transmission. Required equipment and price, network bridge, within 800 yuan; wireless router (it is best to choose a device with a replaceable antenna on the display screen, so that wireless signals can be effectively received), the price is about 100 yuan

Disadvantages: The communication distance mainly depends on the gain ability of the bridge, the communication distance of the wireless router is relatively short, and the signal of the partition wall is weak or no signal. It is suitable for places with wireless signals in short distances. If the area where your display is located already has wireless signal coverage, it is even simpler. You only need to bridge the wireless router connected to the control card in the display to your wireless network, and you can use any computer in the intranet The upper control screen is up.