Industrial-Grade VT-DTU500C 4G DTU, RS232/RS485 to cellular LTE Cat.1, Asia-Optimized Bands
$38.99
⚠️ Cellular Band Confirmation Required
Please ensure the VT-DTU500C supported frequency bands (FDD-LTE / TDD-LTE / GSM) match your local cellular carrier before ordering. A standard data SIM card is required for operation.
Product Overview
The Valtoris VT-DTU500C is an industrial-grade 4G LTE Cat.1 Cellular Gateway engineered for robust edge telemetry. Featuring automated Modbus RTU to JSON encapsulation and native MQTT cloud integration, it is the ultimate serial-to-cellular endpoint for rapidly modernizing legacy RS232/RS485 equipment without complex edge programming.
Quick Specs & Capabilities
- Cellular Backhaul: Global 4G LTE Cat.1 with automated 2G (GPRS) fallback. Delivers up to 10Mbps downlink and 5Mbps uplink rates.
- Hardware Interfaces: Highly insulated RS232 and RS485 serial bus connections to survive extreme cabinet voltage fluctuations.
- Edge IoT Protocols: Built-in transparent serial forwarding, Modbus RTU to TCP protocol conversion, and automated JSON payload encapsulation.
- Direct Cloud Connectivity: Native MQTT publish/subscribe link compatibility with public brokers including AWS, Azure, and AliCloud.
- Industrial Reliability: Integrated hardware watchdog circuit. Supports customizable Hex/ASCII registration and heartbeat packets to maintain persistent connections.
- Power & Management: DC 9~24V wide voltage terminal block input. Fully compatible with VirCom for centralized remote device management and OTA upgrades.
| Technical Specification | VT-DTU500C | |
| Hardware & Physical Interfaces | |
| Serial Interfaces | 1× RS232 (DB9 Male) + 1× RS485 (Terminal Block) |
| Ethernet Port | 1× RJ45 Port (Reserved expansion port, currently inactive) |
| Antenna Interface | 1× Standard 50Ω SMA Female Connector (Cellular RF) |
| SIM Card Architecture | Mini SIM Card (2FF) – Size: 25mm × 15mm (3V / 1.8V compatible) |
| Dimensions (L×W×H) | 9.0 cm × 6.5 cm × 2.5 cm (Native DIN-rail/Wall mount) |
| Enclosure Material | SECC Metal (Rugged industrial anti-interference design) |
| Cellular Network & Speed | |
| Supported Modes | FDD-LTE / TDD-LTE / GSM (Automated 2G GPRS fallback) |
| 4G LTE Bands | FDD-LTE: B1/B3/B5/B8 | TDD-LTE: B34/B38/B39/B40/B41 |
| 2G GSM Bands | GSM/GPRS: B3 / B8 (1800 / 900 MHz) |
| Max Data Throughput | LTE: Max 10Mbps Downlink / Max 5Mbps Uplink |
| Serial Bus & Software Protocols | |
| Baud Rate Range | 300 ~ 921600 bps |
| Core Protocol Stack | Modbus RTU to JSON, Modbus TCP, MQTT client, HTTP POST/GET |
| Edge Computing | Data overrun alarms, register scaling, device offline alert |
| Device Management | Serial AT Commands, VirCom Utility, Cloud OTA |
| Electrical & Environmental | |
| Operating Voltage | DC 9V ~ 24V (Q2.1 power socket / Terminal block input optional) |
| Working Current | Communication: 50mA @ 12V | Standby idle: 25mA @ 12V |
| Op / Storage Temp | -40°C ~ +85°C / -45°C ~ +165°C |
| Operating Humidity | 5% ~ 95% Relative Humidity (Non-condensing) |
Weight: 0.800 kg
1. VT-DTU500C 4G DTU main unit x1
2.4G Suction antenna unit x1
3.12V 1.0A power adapter x1
