M3 Industrial usb internet modem with sim

M3 Industrial usb internet modem with sim M3 industrial usb internet modem with sim adopts industrial grade design, uses metal box. It can be used in the hostile environment -40~ +48. It integrates all the commonly used protocols from logical link layer to upper application layer protocols, such as TCP/IP/UDP and so on. It provides a secure, high speed, reliable wireless internet connection for customers. It supports AT Command, including SMS and data. This product has been