Remote access and networking device for secure access of HMIs, PLC, PCs and other devices or systems over the Internet. NAT and firewall friendly. VPN throughput 70 Mbit/s, Max 100 concurrent VPN connections, WIFI support, 2/2 x Digital I/O, Built-in LTE-modem (LOCK 500i ONLY), Dual SIM slots (LOCK 500i ONLY), Industrial DC power connector, CE, FCC, cUL