Industrial LTE-M / NB-IoT Serial Modem – RS232/RS485 for Low-Power IoT

This Industrial LTE-M / NB-IoT Serial Modem is engineered for applications requiring strong signal penetration, low power consumption, and dependable long-range connectivity. Designed as a modern replacement for legacy GSM/GPRS modems, it delivers reliable serial-to-cloud communication using LTE Cat-M1 and NB-IoT networks — ideal for indoor, underground, rural and low-signal environments.

With RS232 and RS485 interfaces, the modem integrates easily with serial devices such as PLCs, meters, sensors, controllers, HVAC systems, building automation equipment, and environmental monitoring stations. Its industrial MCU and hardware protection ensure stable operation in harsh or remote conditions.

The modem supports transparent data transmission, Modbus RTU passthrough, TCP/UDP, and optional MQTT/COAP for modern IoT platforms. It can also upload data to up to 5 servers simultaneously, providing redundancy and multi-system integration.

Perfect for:
✔ Smart buildings & HVAC
✔ Underground or low-coverage assets
✔ Environmental monitoring
✔ Smart metering & utilities
✔ Industrial automation
✔ Low-power IoT deployments
✔ Migration from legacy GPRS/GSM systems

We keep stock in Australia, offer local tech support, and help integrate this modem with ProSight or any third-party IoT/cloud software.

Cellular Connectivity

• LTE Cat-M1

• NB-IoT

• EDGE/GPRS fallback (where available)

• 1× SMA antenna connector

• 1× SIM slot

Serial Interfaces

• 1× RS232

• 1× RS485

• Simple integration with PLCs, RTUs, meters, sensors & controllers

Supported Protocols

• Transparent TCP/UDP communication

• Modbus RTU ↔ Modbus TCP gateway

• MQTT*

• COAP

• DNS

• AT commands
  (*MQTT pending depending on firmware)

Data Handling

• Supports up to 5 simultaneous data centres (multi-server upload)

• Remote configuration via PC tool or cloud DMP*
  (*Cloud DMP may require a license)

Power Requirements

• Standard: 12V / 0.5A

• Input range: 5–35V DC

• Ideal for solar, battery and low-power systems

Physical

• Metal enclosure

• IP30 rated

• Size: 91 × 58 × 22 mm

• Weight: approx. 208g

• Mounting: desktop or wall mount

• LEDs: Online, Activity, Power, System

Environmental

• Operating: –35°C to +75°C

• Storage: –40°C to +80°C

• Designed for harsh industrial sites

Compatibility

✔ Works with ProSight
✔ Works with any third-party IoT/cloud platform
✔ Ideal for serial-based sensors, PLCs, meters, controllers & telemetry systems