... Industrial 4G WiFi LTE Router 2. 100Mbps 3. WiFi, DHCP,DDNS,DMZ, NAT 4. VPN, World-wide-use, SIM slot Type: H685m Industrial 4G LTE ... RS485/TTL to Cellular GatewayUSB port for usb modem useExternal antenna SMA socketVPN (PPTP, IPSec supported)Support At commandSupport ... HSPA, HSPA+, 4G LTE network, and CDMA1x, CDMA2000 EVDO networks, and TD-SCDMA networks;SMA Standard antenna;Optimized EMC design; ...