Monitoring System 300T
€479.00
The DIN-Rail Control Center for Cabinets and Industry
The Didactum Monitoring System 300T is an advanced monitoring and control unit specifically designed for DIN-rail mounting in electrical cabinets, industrial racks, and complex electrical installations. As an IP-based, self-contained device, it continuously records operating and environmental parameters — from temperature, humidity, and voltage to smoke, water ingress, and vibration, as well as the status of doors and server racks — and issues real-time alerts before an expensive failure occurs.
As an I/O DIN controller, the 8 potential-free inputs and 2 relay outputs can also be used to centrally control doors, fans, generators, UPS systems, and circuit breakers. Configuration is done entirely via a web browser, sensors are automatically detected via AutoSense, and the device can be seamlessly integrated into existing monitoring landscapes such as Zabbix, PRTG, or Nagios via SNMP, Modbus TCP/IP, Syslog, or a REST API.
With up to 100 sensors, 700 freely configurable system elements, redundant power supply (12V DC plus 24–48V DC backup), and a CAN bus for expansion units, the 300T grows alongside increasing requirements. Optionally, an expansion module (OSDPv2 reader or Modbus/RTU) as well as an LTE modem for independent remote monitoring can be retrofitted.
Comprehensive Monitoring of Cabinets and Industrial Equipment
The 300T reliably captures all critical factors in electrical cabinets, industrial racks, and technical installations in real time.
Temperature & Humidity
Protects against overheating and condensation in cabinets and racks.
Power & UPS Systems
Ensures continuous availability of the power supply.
Smoke & Leakage
Early warning of fire or water damage before major damage occurs.
Vibration & Airflow
Early detection of faults in machines and equipment.
Access Control
Secures server cabinets and technical rooms against unauthorized access.
Comprehensive Sensor Integration for Industry and IT
The 300T supports up to 100 sensors, contacts, and relays simultaneously — risks are detected and reported automatically.
Temperature & Humidity Sensors
Precise measurement for cabinets and industrial racks.
Vibration Sensors
Detect vibrations in machines, racks, and doors.
Magnetic Contact & Motion Sensors
Reliably monitor doors and server cabinets.
Leakage & Water Sensors
Early warning of flooding and condensation.
Smoke Detectors
Real-time detection of fire risks.
Current & Voltage Sensors
Monitoring of UPS systems, mains voltage, and consumption.
Four analog sensor ports are available directly on the device, automatically detected via AutoSense. This number can be significantly expanded via the CAN bus — ideal for cabinets, industrial racks, and installations with growing sensor requirements.
Real-Time Monitoring and Automated Alerting
The 300T responds immediately to critical values. When threshold values are exceeded, the system automatically sends email notifications, SMS, web-to-SMS, push notifications, or SNMP traps, or activates a siren. Integration with monitoring software such as Zabbix, PRTG, or Nagios is easy thanks to common network protocols (HTTP, HTTPS, SMTP, FTP, SNMP, Syslog, DHCP, Modbus TCP/IP).
Practical example: A temperature sensor in the cabinet reports critical values. The system activates ventilation and warning lights and sends email and SMS to those responsible — preventing overheating damage to equipment at an early stage.
Web-Based Control & Intelligent Automation
The intuitive web interface allows easy management of sensors, alarms, and scenarios.
- Temperature > 30 °C → switch on ventilation, trigger alarm
- Door opening → send SMS to administrator
- Water ingress → activate siren, send email notification
- Vibration on machine or rack → trigger security alarm
The 300T can be used as an I/O DIN controller for doors, fans, generators, UPS systems, and circuit breakers — ideal for cabinet management, industrial automation, and preventive maintenance.
Full Control
Monitor devices, turn sensor data into actionable insights, and configure integrations — all through an intuitive, web-based interface.
- Monitor real-time data from all connected sensors and devices
- Create automated actions based on defined conditions
- Send email, Telegram, HTTP request, SNMP, or other notifications
- Visualize trends and logs for better decision-making
- Securely manage users, permissions, and access
Scalable, Reliable, and Future-Proof
The system supports up to 700 elements (notifications, triggers, timers, logic schemes) and can be easily expanded. Multiple expansion units can be operated in a chain via the CAN bus, with a maximum distance of up to 225 m from the device. Regular firmware updates ensure long-term usability. Made in the EU — German support included.
Connecting CAN Sensors
Multiple CAN devices can be connected in a chain via the CAN bus. Each 8-port sensor expansion adds 8 additional analog sensors to the system. Each dry contact expansion unit adds 32 or 64 additional dry contact inputs. An additional CAN power supply (12V/1A) is only needed if the number of CAN devices in the chain exceeds 12.
Individually Expandable with Expansion Module & Modem
The Monitoring System 300T offers two internal slots that allow the device to be precisely tailored to your requirements.
Please note: The options listed below are not automatically included in the scope of delivery. They must be selected additionally and separately above the add-to-cart button ("Select expansion module" and "Select modem") so that the desired module or modem is included and installed in the device.
Expansion Module for OSDPv2 Reader
Enables the connection of OSDPv2-capable card readers for access control directly on the device.
Expansion Module for Modbus/RTU
Integrates Modbus/RTU-capable devices, meters, and counters into the Monitoring System 300T.
No Expansion Module
Default selection if no OSDPv2 or Modbus/RTU module is required. Note: Only one of the two modules can be installed in the device at a time.
LTE Modem
Enables independent remote connectivity and alerting via mobile network (incl. web-to-SMS), even without a fixed IP network. Fits into the dedicated modem slot.
No Modem
Default selection if the device is to be operated exclusively via Ethernet.
Access Monitoring, Video & Physical Security
The 300T also protects cabinets and technical rooms against unauthorized access and tampering.
- Magnetic contacts detect unauthorized opening of cabinets and doors
- Motion detectors secure technical rooms
- Vibration sensors detect tampering attempts on equipment
- Up to 4 IP cameras or one USB camera for visual monitoring
- OSDPv2 card reader for access control (optional expansion module)
All sensor and alarm data is also logged with a timestamp, supporting companies with ISO 27001, GDPR, or industry-specific audits.
Commissioning in a Few Minutes
Setup is simple and quick — no additional software required.
- Clip the device onto the DIN rail in the cabinet and connect it to your network via an Ethernet cable
- Connect the included 12V DC power supply — the system starts automatically
- Open the default IP address of the device (see quick start guide) in your browser
- Complete the setup wizard for network settings, admin password, and time zone
- Connect sensors to the analog ports — they are detected automatically (AutoSense)
- Optional: install expansion module (OSDPv2/Modbus RTU) or LTE modem and configure it in the web interface
- Optional: configure alarm rules and advanced settings
What's Included
Please check the scope of delivery for completeness upon receipt and report any missing or damaged parts to your supplier immediately. Additionally ordered options (expansion module, modem) are not included and are shipped separately.
- Didactum 300T Monitoring Unit1 piece
- DIN Rail Mount1 piece
- Power Adapter 12V DC / 1A, 5.5 × 2.1 mm1 piece
- RJ-45 Ethernet Cable, 3 m1 piece
- OTG USB Cable1 piece
- Terminal Block, 10-pin, 3.81 mm1 piece
- Terminal Block, 6-pin, 3.50 mm2 pieces
- Terminal Block, 3-pin, 3.50 mm1 piece
- Terminal Block, 3-pin, 3.81 mm1 piece
- Terminal Block, 5.08 mm1 piece
- Quick Start Guide1 piece
Why the 300T Is the Right Choice
Built for DIN Rail
Compact mounting in cabinets and industrial racks.
Up to 100 Sensors
Temperature, humidity, smoke, leakage, vibration, power, access.
Real-Time Alerting
Via email, SMS, SNMP trap, Syslog, web-to-SMS, or push.
Web-Based
Compatible with Zabbix, PRTG, and Nagios, no additional software required.
I/O DIN Controller
8 potential-free inputs, 2 relay outputs for doors, fans, UPS.
Scalable
Up to 700 elements — notifications, triggers, logic schemes.
Expansion Modules
Optional OSDPv2 reader or Modbus/RTU integration.
Redundant Power Supply
12V DC main input plus 12V and 24–48V DC backup.
Made in EU
German support included, regular firmware updates.
Practical Application Examples
- Environmental monitoring in cabinets, distribution rooms, and industrial racks
- I/O control of fans, generators, UPS systems, and circuit breakers
- Leak detection under raised floors or on air conditioning and cooling systems
- Production halls and industrial facilities: machine, fan, and voltage monitoring
- Access and door monitoring for server cabinets and technical rooms
- Integration of Modbus/RTU devices into existing automation environments
- Event logging and predictive maintenance
- Remote monitoring of branch locations via LTE modem
The Didactum Monitoring System 300T combines IP-based monitoring, I/O control, and alarm management in a scalable DIN-rail platform — for early detection of hazards, fewer failures, and maximum equipment availability.
More About the Didactum 300T
Device Detail Page & Tutorial
Overview of the device, detailed dimensions, and all connections explained individually.
Go to Detail Page →Firmware & Updates
Current firmware versions plus instructions for updating and recovery.
Go to Firmware Page →Live Demo
Try out the web interface of the Didactum Monitoring System online, no obligation.
Go to Demo →Frequently Asked Questions
What is the Didactum Monitoring System 300T and what is it used for?
The Didactum Monitoring System 300T is a DIN-rail monitoring and control unit designed for industrial facilities, electrical installations, and cabinets. It monitors environmental parameters such as temperature, humidity, voltage, leaks, smoke, and vibration, while also functioning as an I/O DIN controller for controlling doors, fans, generators, UPS systems, and circuit breakers.
How does the 300T differ from other Didactum monitoring systems such as the 100T?
While the Monitoring System 100T is a desktop device in a metal housing designed for server rooms, the 300T was specifically developed for DIN-rail mounting in cabinets and industrial installations. It additionally offers 8 instead of 4 potential-free inputs as well as staggered 12V and 24–48V DC power inputs for redundant power supply, but comes housed in a lighter plastic enclosure.
Which sensors can be connected to the system?
The Monitoring System 300T has 4 analog sensor ports directly on the device as well as 8 potential-free inputs, and can be expanded via the CAN bus by up to 32 additional devices — including temperature, humidity, smoke, PIR motion, door, vibration, water, and voltage sensors. In total, up to 100 physical sensors, contacts, and relays can be managed simultaneously.
What about the expansion module and the modem? Are they included in the price?
No. The expansion module (OSDPv2 reader or Modbus/RTU) and the optional LTE modem are not standard components of the scope of delivery. Both options must be explicitly selected during the ordering process above the add-to-cart button under "Select expansion module" and "Select modem" so that they are included and installed in the device. Only one of the two expansion modules (OSDPv2 or Modbus/RTU) can be installed in the device at a time.
How are alarms and notifications sent?
The system offers various alerting methods: email notifications to up to 20 recipients, SMS or web-to-SMS (optional via LTE modem), SNMP traps for network management systems, syslog messages, FTP transfer, and push notifications. In addition, external sirens or strobe lights can be connected via the relay outputs.
Can the system be integrated into existing IT and automation infrastructures?
Yes. The system supports SNMP v1/v2c/v3, Modbus TCP/IP, and — via the optional expansion module — Modbus RTU, and can be integrated into common monitoring platforms such as Nagios, PRTG, Zabbix, or Check_MK. It connects via Ethernet and can be managed both through the web interface and via network management tools.
How is the system initially connected and commissioned?
Clip the device onto the DIN rail in the cabinet, connect it to your network via Ethernet, and connect the included 12V DC power supply. The system starts automatically and can be accessed via a web browser at the default IP address listed in the quick start guide. The setup wizard guides you through the basic configuration (network settings, admin password, time zone). Sensors are detected automatically as soon as they are connected to the analog ports. The "Didactum Manager" helps with advanced configuration and setting up alarm rules.
Can the system be expanded if I need more sensors?
Yes. CAN expansion units can significantly increase the number of sensors: each 8-port sensor expansion unit adds 8 additional analog sensors, and each dry contact expansion unit adds 32 or 64 additional dry contact inputs. The maximum distance of CAN devices from the device is up to 225 m. An additional CAN power supply is only needed once more than 12 CAN devices are operated in the chain.
What power supply does the system need and how failsafe is it?
The Monitoring System 300T is powered via a 12V DC main input and additionally features two separate backup power inputs — 12V DC and 24–48V DC — for redundant power supply with voltage reservation. An integrated watchdog ensures automatic restarts in the event of system errors, and all events are logged.
Questions About the 300T?
Our support team in Germany will be happy to advise you free of charge on selection, options, setup, and sensors.
Schnelleinstieg Monitoring System 300T
Device Management:
- Device Management: Web, SNMP
- Sensor Access: Three-level via login
Interface:
- LAN: Ethernet 100 Mbit
- Operating System: Linux v.6.2
- Interface: Any browser
- Memory (RAM): 128 MB
- CPU Speed: 720 MHz
- Total CPU Cores: 2
- Clock: Built-in clock
- Timer: Built-in watchdog
Sensor Technology and Logic:
- Max. Number of Sensors: 100 (physical sensors, dry contacts, relays)
- Max. Number of Elements: 700 (notifications, triggers, timers, logic, sensors, etc.)
Network / Protocol Support:
- LTE Gateway Mode: Yes
- LTE Access Mode: Yes
- Network Protocols: DHCP, HTTP, HTTPS, SNMP, SMTP, FTP, Syslog, TLS
- Modbus RTU: With VT485m expansion
- Modbus TCP/IP: Yes
- VPN: Secure data transmission: Yes
Power Supply:
- Energy Efficiency (EU Energy Level): Grade A
- Power Input (230V AC): No
- Power Input (24–48V DC): Yes
- Power Input (12V DC): Two inputs
- Min. Power Consumption: 1 W
- Max. Power Consumption: 10 W
Inputs/Outputs:
- Analog Port: 4 built-in ports (6P6C for connecting analog sensors)
- CAN Port: 1 port, max. 32 devices
- Dry Contact Inputs: 8
- Relay Outputs (240V / 10A): No
- Relay Outputs (12V / 0.25A): 2
Video Support:
- USB Cameras: 1
- IP Cameras: up to 4
Environmental Conditions:
- Operating Temperature: -10 to +70 °C
- Storage Temperature: -25 to +85 °C
- Operating Humidity: 0 to 90% (non-condensing)
Mechanics and Enclosure:
- Installation: Desktop
- Enclosure Material: Plastic
- Dimensions (L x W x H): 212.5 x 90.1 x 32.2 mm
- Weight: 0.5 kg
Suitable extension units
Suitable sensors
Suitable software
Warranty extension
Suitable CAN sensors
Manufacturer information:
Didactum® Security GmbH
Im Mühlenfeld 4
48163 Münster
Deutschland
Fon:
(+49) 250 19 71 63 54 / (+49) 171 33 11 577
Email: info@didactum-security.de
