Web Thermometer & Hygrometer Didactum 100T

Ready-to-use monitoring bundle: central unit including first sensor

This Didactum bundle combines the Monitoring System 100T with a CAN temperature and humidity sensor to form a monitoring solution that is ready to use right away. Instead of putting together a central unit and sensors separately, this bundle gives you everything needed to start professional environmental monitoring in server rooms, technical rooms, or small data centers – matched to each other and ready to go from the start.

The Monitoring System 100T serves as the central control and alerting unit: it is connected to the network via Ethernet, is fully configurable through a web browser, and requires no additional software. The included CAN temperature and humidity sensor is connected directly to the CAN bus port, is detected automatically, and delivers precise climate data from the monitored room from the very first moment.

As your needs grow, so does this bundle: additional sensors and expansion units can be added to the CAN bus at any time in a daisy chain, allowing the compact starter configuration to grow into a significantly more extensive monitoring network whenever needed – with no need to replace the central unit.

This bundle includes:

Two Didactum products matched to each other, which together form a complete starter solution for environmental monitoring.

Monitoring System 100T

The Monitoring System 100T is the central control unit of the bundle and the latest generation of Didactum's high-end monitoring systems, developed and manufactured in the European Union. It operates completely independently via an integrated web server, requires no additional software installation, and thanks to its hardened Linux operating system and built-in watchdog, is designed for continuous 24/7 operation in critical environments such as server rooms, production facilities, or data centers. Up to 36 sensors can be connected and automatically detected via four analog ports and a CAN bus port, while integration into SNMP-, Modbus TCP/IP-, or Syslog-based monitoring landscapes such as Zabbix, PRTG, or Nagios is achieved without any additional effort. With 10/100/1000 Mbit/s Ethernet, an optional LTE modem, and an optional OSDPv2 or Modbus/RTU expansion module, the 100T can also be tailored precisely to the relevant infrastructure.

Combined temperature and humidity sensor (CAN)

The CAN temperature and humidity sensor included in the bundle is a high-quality combined sensor with an attractive price-performance ratio, which connects directly to the CAN bus port of the Monitoring System 100T and is automatically detected there. Temperature and relative humidity are displayed as two separate elements in the web interface, so that individual threshold values, notifications, and alarm rules can be defined for each value. A key feature is the automatic calculation of the dew point from the measured temperature and humidity values, which helps prevent condensation damage in server rooms and technical rooms in particular. Since the sensor is CAN bus capable, it can be combined with up to 32 additional CAN devices in a daisy chain if needed, allowing the bundle to be expanded later with additional sensors as required.

Comprehensive sensor integration for the bundle

The Monitoring System 100T supports up to 100 sensors, contacts, and relays simultaneously – with up to 36 sensors supported directly out of the box via the analog ports and the CAN bus. The CAN temperature and humidity sensor included in the bundle already occupies one measuring point on the CAN bus and delivers precise temperature and humidity data (±0.4 °C and ±3% RH respectively) including automatic dew point calculation from the monitored room right from the start – all other sensor types listed below can be added at any time.

Thanks to the CAN bus connection of the included sensor, the bundle can be expanded at any time with additional Didactum CAN sensors or expansion units – ideal for growing from a starter solution into a comprehensive monitoring network as demand increases.

Real-time monitoring and automated alerting

The Monitoring System 100T reacts immediately to critical values from the included temperature and humidity sensor as well as all other connected sensors. When threshold values are exceeded, the system automatically sends email notifications, SNMP traps, or activates a siren. With an optionally installed LTE modem, SMS and web-to-SMS notifications are also possible. Integration with monitoring software such as Zabbix, PRTG, Nagios, or Check_MK is straightforward thanks to common network protocols (HTTP, HTTPS, SMTP, FTP, SNMP, Syslog, Modbus TCP/IP, DHCP).

Web-based control & intelligent automation

The multilingual web interface allows easy management of sensors, alarms, and scenarios – right from the moment the bundle is put into operation.

• Temperature > 30 °C → switch on ventilation, trigger alarm
• Humidity > threshold value → send email to administrator
• Dew point critical → activate air conditioning, send warning notification
• Additional sensor detected on the CAN bus → automatically add to the dashboard

The Monitoring System 100T can be used as an I/O controller for air conditioning, UPS, generators, lighting, or fans – ideal for IT environment management, building automation, and preventive maintenance.

Full control

Monitor the central unit and sensor, turn sensor data into actionable insights, and configure integrations – all through an intuitive, web-based interface.

• Monitor real-time data from the included sensor as well as all other connected devices
• Create automated actions based on defined conditions
• Send email, HTTP request, SNMP, or other notifications
• Visualize trends and logs for better decision-making
• Manage users, permissions, and access securely with a three-tier system

Individually configurable: expansion module & modem

The Monitoring System 100T included in the bundle can already be tailored precisely to your requirements during the ordering process.

Expansion module

Modem

Scalable, reliable, and future-proof

The Monitoring System 100T included in the bundle is equipped with 10/100/1000 Mbit/s (Gigabit) Ethernet. The system supports up to 700 elements (sensors, triggers, logic schemes, notifications) and can be expanded as needed via the CAN bus port with additional sensors and expansion units in a daisy chain. Regular firmware updates ensure long-term usability. Made in the EU – with German support included.

Connecting CAN sensors

The Monitoring System 100T has a CAN bus port to which the temperature and humidity sensor included in the bundle is connected directly and detected automatically. Additional CAN devices can be linked together in a chain via this port – up to 24 CAN devices per chain are recommended, with a maximum of 32 devices per port. Each 8-port sensor expansion adds 8 additional analog sensors to the system, and each dry contact expansion unit adds 32 or 64 additional dry contact inputs. The total length of the CAN bus can be up to 230 m; an additional CAN power supply (12V/1A) is only needed if the number of CAN devices in the chain exceeds the recommended limit.

Building monitoring & physical security

The existing ports and the CAN bus allow the bundle to be expanded with security sensors at any time.

• Magnetic contact sensors detect unauthorized opening of doors and windows
• Motion detectors secure server rooms and technical rooms
• Vibration sensors detect tampering with racks
• Optional OSDPv2 expansion module for card reader integration

All sensor and alarm data is also logged with a timestamp, which helps companies with ISO 27001, GDPR, or industry-specific audits.

Set up in just a few minutes

Setting up the bundle is quick and easy – with no additional software required.

1. Connect the Monitoring System 100T to your network via an Ethernet cable and supply it with power – the system starts automatically
2. Enter the device's default IP address in your browser
3. Go through the setup wizard for network settings, admin password, and time zone
4. Connect the included CAN temperature and humidity sensor to the CAN bus port via the RJ11 cable – it is detected automatically
5. Set threshold values and notification types for temperature and humidity in the web interface
6. Optional: add further sensors or expansion units to the CAN bus

What's included in the scope of delivery

Please check the scope of delivery for completeness upon receipt and report any missing or damaged parts to your supplier immediately.

• Didactum 100T monitoring unit1 piece
• 12V DC plug-in power supply1 piece
• Ethernet cable1 piece
• OTG USB-C cable1 piece
• Quick start guide for Monitoring System 100T1 piece
• Warranty card1 piece
• CAN temperature and humidity sensor1 piece
• RJ11 connection cable (CAN)1 piece

Depending on the option selected (expansion module and/or LTE modem), the scope of delivery of the central unit may be extended accordingly.

Why this bundle is the right choice

Practical application examples

• Temperature and humidity monitoring in server rooms and IT racks from day one
• Condensation protection through automatic dew point calculation
• Expansion with leak, smoke, or motion sensors as needs grow
• Monitoring of air conditioning units, cold rooms, and freezer rooms
• Remote monitoring of branch offices or remote sites via LTE modem
• Verifiable event logging for audits and compliance

This bundle of the Monitoring System 100T and the CAN temperature/humidity sensor combines central IT monitoring, precise climate measurement, and flexible expandability in a ready-to-use solution – for early detection of risks, fewer outages, and maximum system availability.

More about the bundle

Frequently asked questions