IoT Pro
RS232 Module
A retrofit serial communication module designed to interface with RS232-based equipment, enabling data extraction from point-to-point and legacy devices, and built on the IoT Pro industrial hardware architecture.
Product Code: IOTPRO-RS232-MODULE
Product Overview
The IoT Pro RS232 Module is an industrial serial communication module designed to connect directly to RS232-equipped devices and convert their output into structured data for modern software platforms.
RS232 remains widely used in legacy, laboratory, OEM, and specialised equipment where communication is point-to-point and often undocumented or proprietary.
From a system architecture perspective, the module functions as a serial data capture and protocol translation node, allowing integrators to modernise isolated equipment without interfering with its operation or firmware.
Typical Installation Points
The IoT Pro RS232 Module is typically installed where single-device, point-to-point serial communication is required. These devices often expose valuable operational data but lack networking or remote access capabilities.
Laboratory Equipment
Instruments and Analysers
Weighing Systems
Industrial Scales / Batching Systems
Access Systems
Access Control / Ticketing Equipment
OEM Machinery
Diagnostic RS232 Ports
Legacy Controllers
Embedded Control Systems
Telemetry Devices
Equipment with Serial Output
Custom Machinery
Low-Volume or Bespoke Industrial Machines
Interface Capabilities
The RS232 interface supports direct, point-to-point serial communication with a wide range of devices.
RS232-Capable Equipment
-
Weighing scales and load indicators
-
Laboratory analysers and sensors
-
CNC and specialised manufacturing equipment
-
Ticketing, vending, and access systems
-
Embedded controllers and OEM electronics
-
Serial printers and logging devices
RS232 is well suited for short cable runs, simple protocols, and equipment that communicates asynchronously or on request.
Channel Architecture
The IoT Pro RS232 Module combines reliable RS232 serial connectivity with built-in auxiliary I/O, enabling more powerful integrations than a basic serial converter. It provides transparent, point-to-point communication for device-specific and proprietary protocols, making it ideal for connecting legacy equipment, OEM machinery, and embedded controllers to modern IoT platforms.
With support for baud rates from 1200 to 115200 bps, the module ensures broad device compatibility while allowing serial data to be combined with local I/O signals for richer monitoring, control, and automation use cases — all within a single compact module.
Additional I/O Interfaces
This hybrid architecture allows protocol data and physical signals to be correlated within a single device.
Digital Inputs
5 x Digital Inputs
Dry Contact Inputs
Pulse Inputs
Temperature Probes (DS18B20)
Suitable for monitoring contact-based signals, event counters, auxiliary temperature points, and equipment status signals.
Analog Input
1 x 0-30 V Voltage Input
Suitable for monitoring external power sources, battery systems, or auxiliary equipment states.
Digital Output
1 x Digital Open-Drain Output
500 mA Continuous Current
Up to 1 A Pulse Capability
Suitable for local signalling or basic control functions.
IoT Pro Hardware Architecture
Power-Intelligent Operation with Backup
Enables continued monitoring and recovery after power interruptions, which is critical when interfacing with field equipment that may reboot or change state during outages.
Flexible Connectivity, One Integration Model
Allows RS232 devices in deep plant rooms or remote cabinets to be integrated using 4G LTE Cat 1, NB-IoT, LoRaWAN, Wi-Fi, or hybrid network strategies without changing software integration.
Antenna & Mechanical Flexibility
External and through-lid antenna options enable reliable communication even when the module is installed inside metal panels or electrically shielded enclosures.
Modularity for Legacy Integration
Enables gradual modernisation of legacy infrastructure without replacing existing equipment or introducing external protocol conversion hardware. An optional integrated GNSS module supports applications involving mobile or relocatable assets.
System Integration Context
The IoT Pro RS232 Module is typically used in custom and legacy integration projects, where each connected device may behave differently and require tailored parsing or logic.
It provides a robust hardware foundation for integrating RS232 equipment into monitoring, compliance, and operational systems without redesigning the original machine.
Technical Documentation
All documentation is written for software integrators, system engineers, and deployment teams and aligns with the IoT Pro platform architecture.