Didactum 500T Monitoring System - Basic IT Protection via SMS

Didactum Monitoring System 500T Bundle – Basic IT Protection via SMS

The Didactum 500T is the leading SNMP monitoring system for professional IT infrastructure and server room monitoring made in the EU. This advanced complete bundle includes everything you need for instant 24/7/365 protection of your critical infrastructures – and much more: Didactum Monitoring System 500T, high-precision temperature sensor, calibrated humidity sensor, reliable water sensor, photo-optical smoke sensor, and fully integrated GSM modem SMS alarm module including external antenna for best reception even in shielded technical rooms.

Scope of Delivery – Everything Ready for Immediate Start

• Didactum Monitoring System 500T – High-end rack monitoring appliance with ARM Cortex CPU, 128 MB RAM, 4 GB Flash, Linux 64-bit OS and full SNMPv1/v2c/v3 support including encrypted TLS connection
• Temperature Sensor – Calibrated ST-1 sensor, measuring range -40 to +100 °C, accuracy ±0.3 °C, can be installed up to 100 m away, including 2 m RJ11 cable + screws + 3M adhesive tape
• Humidity Sensor – Calibrated 0–100 % RH, ±2 % accuracy, including 2 m RJ11 cable + mounting kit
• Water Sensor – Leakage spot sensor with gold contacts, immediate detection of tap water, condensate & distilled water, including 2 m RJ12 cable + mounting tape
• Smoke Sensor – Photo-optical smoke detector compliant with EN-54, up to 15 units connectable in series (max. 150 m), including 2 m RJ11 cable + ceiling mounting kit
• GSM Modem Module – Quad-band 850/900/1800/1900 MHz, external SMA antenna with 3 m cable + magnetic base for optimal reception even in steel server cabinets, SIM card not included

Why the Didactum 500T is Germany’s No. 1 for Server Room Monitoring

Numerous installed systems throughout the D-A-CH region speak for themselves. The Didactum 500T was specifically developed for continuous operation in data centers, server rooms, production halls, banks, hospitals, museums, and industrial facilities. No moving parts – no fans, no hard drives – only highly reliable electronics in a 1U 19" metal housing with internal 230 V power supply (85–264 V AC, 50/60 Hz). The integrated thermal sensor protects the system itself from overheating beyond 70 °C by automatic shutdown.

Thanks to the GSM modem SMS alarm, you receive critical alerts on your mobile phone even if the entire network, internet, and power supply have failed – because the GSM module continues to operate with an external 12 V backup battery (optional).

Technical Highlights of the Didactum 500T in Detail

• 8 analog RJ11 sensor ports + 4 dry contact inputs as standard
• 2 x CAN-Bus ports (Master + Slave) for up to 64 additional sensors or dry contact units
• Total CAN-Bus range: 305 meters at 50 kBit/s
• Integrated web server with HTTPS/TLS 1.3
• Real-time clock with NTP sync and 10-year backup battery
• Watchdog timer + automatic reboot function in case of system hang
• Protocols: SNMP v1/v2c/v3 (AES-256), MQTT, Modbus/TCP, Syslog, FTP, SFTP, SMTP with STARTTLS
• RADIUS & LDAP/Active Directory integration for two-factor login
• PING monitoring of up to 100 IP addresses including packet loss display

8 RJ11 Ports + CAN-Bus = Up to 76 Monitoring Points with a Single System

The Didactum 500T is the only system in this price range that offers 8 analog sensor ports + dry contacts + 2 CAN-Bus ports as standard. This allows you to monitor entire buildings, floors, or data center halls with just one device – up to 305 m range via simple CAT6 cable.

Automatic Sensor Detection & German Web Interface – Incredibly Easy

Each sensor is automatically detected in under 3 seconds. Name sensors freely: “Temp Rack 3 Top,” “Humidity Air Conditioning 2nd Floor,” “Water Raised Floor Zone 4.” Define up to five threshold levels: Lower Critical, Lower Warning, Normal, Upper Warning, Upper Critical. Example temperature: 18 °C (Critical Low), 20 °C (Warning Low), 22–26 °C (Normal), 30 °C (Warning High), 35 °C (Critical High).

Thanks to the integrated “IF-THEN-ELSE” logic, the Didactum 500T automatically switches on the fans connected to relay 1 at 32 °C, activates relay 2 (emergency ventilation) at 38 °C, and simultaneously sends SMS messages to five administrators, SNMP trap to Nagios, and email to the building management system.

Integrated Data Logger with 10 Years Storage & Real-Time Graphs

All measurement values are stored down to the second in a ring buffer. Factory default: 60,000 data records = approx. 3 months at 60-second intervals. Expandable via USB stick for over 10 years. Zoomable graphs directly in the browser, mouse-over shows exact value + timestamp. Export as CSV, XML, JSON, or PDF with company logo. Perfect for ISO 27001, TÜV, GDPR documentation, and energy audits per DIN EN 50001.

Alarm Map with Editable Floor Plan

Upload your server room floor plan (PDF/PNG/JPG) and place sensor icons via drag & drop. In case of an alarm, the corresponding sensor blinks red and shows the live value. Export as PDF report with timestamp – ideal for facility management handover.

Guaranteed Compatibility with ALL Leading Systems

100% compatible with Nagios XI, Icinga2, check_MK, Zabbix 6.x, PRTG, Paessler, LibreNMS, OpenNMS, Centreon, SolarWinds, HPE OneView, Cisco Prime, WhatsUp Gold, OpManager, Pandora FMS, and many more. 

Temperature Monitoring – More Accurate than Most Data Center Air Conditioners

The included temperature sensor measures -40 to +100 °C with ±0.3 °C accuracy in the range of 0–70 °C. Perfect for Cold Corridor 18–27 °C monitoring according to ASHRAE TC 9.9. Can be installed up to 100 m away using a standard telephone cable.

Humidity Sensor

The calibrated humidity sensor warns below 30% RH (ESD risk for SSDs) and above 60% RH (condensation risk). Measuring range 0–100 % RH, ±2 % accuracy between 10–90 %. Ideal for data centers, museums, archives, and battery rooms.

Water Sensor – Detects Even Two Drops of Tap Water

The water sensor with gold-plated contacts detects even the smallest amounts of water, condensate, or distilled water. Perfect for installation under raised floors, in front of air conditioners, in suspended ceilings, or near UPS batteries.

Smoke Sensor – Early Fire Detection

The photo-optical smoke sensor detects smoldering fires up to 30 minutes before open flames. Up to 15 detectors can be connected in series – perfect for large server rooms, transformer stations, or archive storage areas. Alarm also in case of dust development or cable overheating.

GSM Modem SMS Alarm

The built-in quad-band GSM modem sends SMS alerts within 8 seconds. Up to 10 phone numbers, individual text macros (“Server Room 3: Temperature 38 °C Critical!”). Remote control via SMS: “RELAY1 ON” activates the fan – confirmation is sent back immediately.

Free Nagios GSM Plugin – External Systems Can Send SMS

Even if your Nagios server has no internet connection, the Didactum 500T GSM modem can be accessed by any system via SNMP-write. The free plugin sends SMS messages directly from Nagios.

The Didactum 500T Bundle is Ready for Immediate Use

You receive a fully pre-configured IT infrastructure monitoring system with all essential sensors and GSM modem SMS alarm. Plug & Play within 15 minutes. 5-year warranty, lifetime free firmware updates.

Package Contents:

• Didactum Monitoring System 500T
  Power supply 230 V AC
• Temperature Sensor
  Didactum temperature sensor for measuring and monitoring indoor temperatures.
  Can be positioned up to 100 meters away from the monitoring system via RJ11 cable.
  2 m RJ11 patch cable and mounting accessories
• Humidity Sensor
  Relative humidity (RH) sensor including 2 m RJ11 connection cable and mounting accessories (screws, mounting tape)
• Water Sensor
  Didactum leakage sensor including 2 m RJ12 patch cable. Screws and mounting tape included.
• Smoke Sensor Didactum
  Smoke sensor suitable for all Didactum monitoring systems, including 2 m RJ11 connection cable, mounting screws, and double-sided mounting tape. Optionally installable up to 150 meters away and chainable in series.
• GSM Modem Module:
  Built-in GSM modem module (operator SIM card not included!) expansion module already integrated in the device