Standards: GSM/GPRS/EDGE/UMTS/HSPA/UMTS/HSPA+/FDD LTE. Dual SIM redundancy for persistent 2G/3G/4G cellular network connections. RobustOS + SDK + App. IPsec/OpenVPN/GRE/L2TP/PPTP/DMVPN. Management and maintenance via Web/CLI/SMS/SNMP/RobustLink Cloud. Robust industrial design (9 to 36V DC, desktop or wall mounting or DIN rail mounting). Antennas and power supply are not included.