Industrial 4G Cellular Modem & Edge Gateway
The VT-DTU500 Series provides robust and secure data transmission for remote M2M and IoT applications across harsh environments.
Global Band 4G/2G Support
Supports global LTE-FDD/TDD and quad-band GSM networks, ensuring immediate cellular registration across EMEA, Americas, and APAC regions.
4G DTU Function (Transparent Transmission)
Executes bi-directional transparent data forwarding from legacy RS485/RS232 end-devices directly to central extranet servers over 4G.
Cellular Router Function
The RJ45 Ethernet port provides wired routing, delivering shared 4G internet access and Wi-Fi bridging for adjacent PLCs and IP cameras.
Secure VPN Tunnels
Encrypts raw field telemetry using carrier private APNs and standard industrial cryptographic tunnels (IPsec, L2TP) to corporate firewalls.
MQTT Gateway Function
Utilizes native MQTT Publish/Subscribe mechanisms to maintain lightweight, persistent data connections to AWS, Azure, Baidu, and Tencent clouds.
Edge Protocol Conversion (Modbus to JSON)
Autonomously polls Modbus RTU or DLT-645 serial instruments, parsing raw hex registers into structured HTTP/MQTT JSON payloads at the edge.
Multi-Host Polling Support
The storage Modbus gateway manages concurrent TCP polling requests from up to 7 SCADA clients, sequencing commands to prevent RS485 bus collisions.
Customizable Registration & Heartbeat Packets
Sends persistent TCP heartbeat strings to prevent carrier disconnections, and auto-injects ASCII/Hex registration packets to verify remote slave IDs.
Wide Voltage Input & Protection
Supports DC 9~48V wide voltage input. Utilizes internal galvanic insulation to ensure the SECC metal chassis remains non-conductive during electrical surges.
Flexible Installation Modes
Features a micro-sized chassis with both wall-mounting screw flanges and a standard 35mm DIN-rail buckle for highly crowded control panels.
Interface Diagram & Dimensions
