Dongguan,March 20, 2023 – VistoTek, a professional IOT provider, has released 4G DTU VTK-DTU3024
Which Supports RS232 and RS485 data transparent transmission, this device transmits data to the internet through 4G Cat.1. Users can remotely query or configure data for RS232 or RS485 devices through a computer or a mobile phone. The DTU supports MQTT protocol and can interface with remote cloud platforms through subscribe and publish. Users’ terminal devices can send data request to a specified HTTP server through this device, and the device will receive the data from the HTTP server, parse the data, and send the result to the device. With an additional adapter, the DB9 interface can be modified to a one-port relay output. The device provides an SDK for secondary development, and supports GPS function (optional). The device supports MODBUS to JASON conversion, MODBUS mapping, and MODBUS gateway mode. The default mode is MODBUS transparent transmission, but it can be modified to switch from MODBUS RTU to MODBUS TCP. The device adopts a wide temperature design with a working temperature range of -40℃ to 85℃. It has high-level lightning protection, electrostatic protection, and anti-group pulse protection. The DTU can be widely used in industrial automation, energy, transportation, power, smart mining, petrochemicals, security, remote monitoring of energy storage, and remote monitoring of inverters.

Key Features
- Supports RS485 and RS232/one-port relay output
- Supports 4G Cat.1, 4G Mini SIM
- Supports GPS optionally
- Supports MODBUSto JASON conversion
- Default mode is MODBUS RTU, switchable to MODBUS TCP
- Supports HTTP
- Supports MQTT, supports secondary development
- Supports alarm SMS transparent transmission
- Wide temperature design, operating temperature range of -40℃to 85℃
- ±4KV EFT group pulse protection
- ESD electrostatic protection: contact ±8KV, air ±15KV
- Surge protection: all interface ±2KV