R40 4G LTE industrial openvpn router

1.Support hundreds of 3G/4G wireless modules, plug and play;
2.Intelligent anti-drop line, support online detection, online maintenance, automatic redial of dropped calls, ensuring that the device is always online;
3.Cloud remote background management, ad push, remote upgrade and remote configuration;
4.Local network PHP browsing and remote synchronization of local storage content;
5.Support serial port TCP/UDP transparent data transmission or AT command transmission;
6.SMS control route online and offline, short-term notification of routing status;
7.Support VPN security tunneling, including PPTP, L2TP;
8.Complete and robust router function, support multiple Internet access methods: automatic allocation, specified IP, PPPoE;
9.Support ARP, DDNS, DHCP, DNS , HTTP,HTTPS, ICMP, PPP, PPPoE, SMTP, SNTP, SSL,TCP/IP, Telnet, UDP protocols;
10.Support serial port local TFTP, web software upgrade.