How to choose LED wireless control card? What kinds of wireless are there?

1. Short-distance wireless LED control card is RF wireless control card

Features: high cost, no expense, but the distance is generally limited to about 300 meters.

The method of use is: plug the receiving module into the USB port of the computer, and connect the control card and the receiving module on the display screen

The disadvantage is that it is not very stable and receives greater interference from the surroundings. , the distance with the wall is seriously shortened

2. LED display SMS control card, also known as GSM SMS control card, GSM control card, different names are different

How to use: You need to insert a mobile phone card

Send text messages through mobile phone, Fetion software, or professional text messaging software

Advantages: Relatively simple, easy to maintain, and can be maintained and used by ordinary personnel , you can use Fetion to send messages for free

Disadvantages: Only suitable for sending information for displays with less than 300 units.

3. GPRS wireless control card, also known as: LED wireless control card

Advantages: sending information faster, more functions: hierarchical management permissions, user management, group management , information preview, etc. Suitable for large quantities of wireless terminals to send information synchronously

Disadvantages: It is more complicated to use than GSM SMS cards, especially the use of network servers. The server software must be stable, and the cost of building a server is relatively high. Traffic charges are required

4. Infrared remote control input control card

Features are: You can input and modify the contents of the display using the keyboard

Disadvantages: It is only suitable for input English, not suitable for Chinese input and display

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