The Didactum DIN Sensor Expansion Unit is a professional solution for industrial monitoring systems that require more sensor ports than are available by default. This expansion module allows up to eight additional analog sensors to be connected—flexibly, scalably, and reliably integrated via the CAN bus.

Ideal for industrial facilities, server rooms, and critical infrastructure, the sensor expansion unit enables precise monitoring of environmental parameters such as temperature, humidity, smoke, water leaks, or door states.

Flexible expansion of industrial monitoring systems

Modern Didactum monitoring systems are equipped with four to eight sensor ports as standard. When requirements increase or the system needs to be expanded, the DIN Sensor Expansion Unit provides simple integration of additional sensors via the CAN bus.

Each unit adds eight extra analog inputs. Up to 32 DIN expansion units can be operated in a daisy‑chain configuration, allowing even large environments such as manufacturing halls or technical distribution rooms to be monitored efficiently and centrally.

Key features of the DIN Sensor Expansion Unit

• Sensor ports: 8 analog connections for Didactum sensors
• Bus technology: CAN‑bus (Controller Area Network)
• Chaining: Up to 32 expansion modules in a daisy‑chain configuration
• Mounting: DIN rail, wall, or rack installation
• Integration: Automatic sensor detection by the monitoring system
• Distance: Up to 225 meters between devices
• Power supply: Optional external 12 V power adapter for larger installations

Simple installation and configuration

Installation is straightforward. The expansion connects to the CAN port of the main system using a standard RJ12 cable. Once connected, the monitoring system automatically detects the new sensor unit. Sensors can then be configured and named individually via the Didactum web interface.

Thanks to the central software interface, management of all connected sensors—whether directly on the main unit or via expansions—is uniform and intuitive.

High scalability and compact design

The modular design of the DIN Sensor Expansion Unit offers maximum flexibility: additional sensors or expansion modules can be added at any time without modifying or replacing existing systems. The rugged DIN housing ensures safe and space‑saving integration in control cabinets.

Versatile application areas

• Data centers: Expanding environmental monitoring with additional temperature and humidity measurements.
• Industrial facilities: Monitoring production areas, machine rooms, and power supply systems.
• Building technology: Supervising HVAC systems, access control, and technical service rooms.
• Critical infrastructure: Adding sensors along security‑sensitive areas.

Stable power supply and reliability

Each expansion unit is normally powered through the bus. For a larger number of modules or longer distances, an external 12 V power supply is recommended to ensure stable voltage distribution. This keeps all sensors active even in large‑scale monitoring setups.

Intelligent remote monitoring

Sensor data is transmitted in real time to the central Didactum monitoring platform. Alarm and notification rules can be defined—via email, SMS (with GSM modem), SNMP traps, or relay outputs for building control systems.

This enables automated process control and rapid response to critical conditions.

Future‑proof solution for modular infrastructure monitoring

The Didactum DIN Sensor Expansion Unit provides businesses with a scalable, robust solution for extending existing monitoring systems. Easy installation, integrated CAN‑bus technology, and central management ensure longevity, expandability, and security—a vital component for Industry 4.0 and modern monitoring solutions.