The AGS-7130-AC-LTE-T is loaded with luxuriant security features including VPN, firewall, NAT, port forwarding, DHCP server and many other powerful features for outdoor IP surveillance applications. The redundancy design in fallback 12-48 VDC power terminal, and dual SIM cards make the data transmission, and network connection without lost. With a built-in world-class 4G LTE module, you just need to insert SIM card from local mobile carrier to get to the Internet. The dual SIM design provides a more reliable WAN connection for critical applications. By VPN tunneling technology, remote sites easily become a part of Intranet, and all data are transmitted in a secure (256-bit AES encryption) link. The feature of DI/DO allows gateway to have real-time response whenever events are detected by sensors. For M2M (Machine-to-Machine) applications, Antaira Cellular Gateway is absolutely the right choice.