4G with one SIM slot for cellular WAN 1 x Fast Ethernet port 3 x Digital Input 2 x Digital Output 1 x (RS-232 or RS-485) Serial port Supports Modbus TCP/RTU/ASCII Master/Slave Access Durable zinc-plated steel case is corrosion-resistant to ensure device longevity -30 to 70°C operating temperature to resist harsh environments Wide Voltage Range Input: DC 9-36V DIN-rail mounting allows for optimal device placement Modbus CompatibilityCompatible with various Modbus TCP/RTU/ASCII protocols for IIoT legacy device integration.IIoT TelemetryCollect valuable data from remote sensors and devices for processing, analysis, and monitoring.Secure VPN ProtectionProtect sensitive data transmission via secure VPN tunnels to prevent unauthorized network access.IT/OT IntegrationConverge business and production functions for access to real-time actionable data and analytics.Industrial-Grade DurabilityCorrosion-resistant zinc-plated steel casing and robust design ensure reliable operation in harsh enviro