Features:
Standard industrial grade products, EMC anti-interference design, strong ability to adapt to the environment;
Plug and play, easy to install and use, unplug the original U disk during use, plug in only the Internet of things disk, you can use it;
You can copy the advertisement file into the U disk in the traditional way, or wirelessly transmit the advertisement file remotely;
The original stand-alone version of the advertising machine does not need to replace the motherboard and playback system, and the original motherboard and playback system remain unchanged;
Support external antennas, for places with poor signal, such as elevators, external antennas are specially used to be placed outside the elevator car roof;
Support to obtain the address of the communication server from the load server, which is convenient for the establishment of a huge number of end-user systems;
4G networking, automatic connection and login to the cloud media advertising platform without manual configuration
Support wireless remote upgrade, you can upgrade the program in the U disk in the cloud;
Automatic positioning function, regularly uploading its own latitude and longitude to the instant investment cloud media platform for easy management;
Support WIFI Internet access, WIFI data collection function;
USB supports adding extension cables, suitable for some advertising machines that are not convenient for installation;
After the advertisement file is downloaded, it can automatically refresh the playback system;
4G basic parameters:
Frequency band:
          Mobile: LTE-TDD: B38 / B39 / B40 / B41
          LTE-FDD: B8
         TD-SCDMA: Not supported
        GSM: not supported
Telecom: LTE-FDD: B1 / B3 / B5
           LTE-TDD: B41
China Unicom: WCDMA: B1 / B8
          LTE-FDD: B1 / B3 / B8
          LTE-TDD: B41
rate:
LTE-TDD: Maximum 150Mbps (DL) / maximum 50Mbps (UL)
LTE-FDD: Maximum 150Mbps (DL) / maximum 50Mbps (UL)
WCDMA: Max 42Mbps (DL) / Max 5.76Mbps (UL)
TD-SCDMA: Maximum 4.2Mbps (DL) / Max 2.2Mbps (UL)
Power consumption:
Off mode: 20uA
Sleep mode: 3mA (average)
Sensitivity:
     FDD B1: -96dBm (10M)
     FDD B3: -96dBm (10M)
     FDD B5: -96dBm (10M)
     FDD B8: -96.5dBm (10M)
     FDD B38: -96dBm (10M)
     FDD B39: -97dBm (10M)
     FDD B40: -96.5dBm (10M)
     FDD B41: -96dBm (10M)
     WCDMA: B1: -110dBm
     WCDMA: B1: -111dBm
     TDSCDMA: B34: -109dBm
    TDSCDMA: B39: -109dBm