What matters should be paid attention to during the daily use of 4G DTU?

What matters should be paid attention to during the daily use of 4G DTU?

　　 1. Open the package, first take out the sucker antenna, serial port, power supply and other firmware.

　　2. Use a suitable tool to properly press the SIM card holder switch and wait for the card holder to pop out automatically.

　　3. Put the SIM card prepared in advance in the card slot, and then push the card slot back to the firmware.

　　 4. According to the product instructions, install the suction cup antenna accurately.

　　5. After the assembly is completed, when using the product, the 4G DTU needs to be installed on the guide rail in the protective box, and the antenna should be led out to the box and fixed to an appropriate position.