Didactum PDU-4M
€419.00
Controllable and Measured Power Supply for 4 Outlets
The Didactum PDU-4M is a network-enabled Power Distribution Unit with four individually switchable and individually monitored IEC-320-C13 outlets. Each outlet can be switched on or off independently, reset, or toggled, while providing precise measurements for voltage, current, power, frequency, and active and apparent energy. This makes the PDU-4M ideal for server racks, network cabinets, and technical installations where individual loads need to be monitored and remotely controlled.
In addition to power distribution, the PDU-4M includes a CAN bus port for connecting environmental sensors, allowing climate values to be recorded directly at the power distribution unit. Control is available via the integrated web interface, a mobile app, or common M2M protocols such as REST API and SNMP.
The PDU-4M therefore combines power distribution, per-outlet energy metering, and environmental monitoring in a compact device for desktop or 19" rack installation.
Four outlets, individually controllable
Each of the four IEC-320-C13 outlets on the PDU-4M can be controlled and monitored independently of the others.
On / Off
Each outlet can be switched individually, manually or automatically.
Reset
Briefly switch off and back on to restart connected devices.
Toggle
Change the current state of an outlet via click or API call.
Zero Current Switching
Each output switches without current to protect connected devices during switching.
Control is possible via the device's web interface, a mobile app, and M2M protocols such as REST API and SNMP.
Precise energy measurement per outlet
At each of the four outlets, the PDU-4M independently measures the relevant electrical values with an accuracy better than 1%.
Voltage (V)
Recorded separately for each outlet.
Current (A)
Recorded separately for each outlet.
Power (W)
Active and apparent power per outlet.
Frequency (Hz)
Line frequency is also measured.
Active Energy (kWh)
Cumulative energy consumption per outlet.
Apparent Energy (kWh)
Reported in addition to active energy.
All measured values are displayed in the web interface and are also available via M2M protocols such as SNMP or the REST API.
Defined state after power failure and automatic schedules
The "PowerUp state" parameter defines how each outlet behaves immediately after power is restored, before regular communication with the higher-level system is established. The available states are "On" and "Off", allowing critical loads to switch back on automatically after a power outage or remain deliberately off.
In addition, switching for each outlet can be configured on a time basis using a graphical scheduler. Each outlet can have its own schedule, allowing automatic switching on or off, for example for regular restarts or to power down unused loads outside business hours.
Environmental monitoring directly at the power distribution unit
Via the CAN port of the PDU-4M, digital CAN sensors and CAN extensions can be connected and continuously evaluated to monitor critical environmental factors, prevent device damage, and avoid downtime. Up to 24 CAN devices can be managed in a chain, supplemented by up to 300 additional elements such as notifications, triggers, timers, and logic schemes for custom monitoring solutions.
CAN Sensors
For example, combo sensors for smoke, temperature, and humidity directly on the CAN bus.
Analog Expansion (VT408)
Each unit adds 8 additional analog sensor ports via the CAN bus.
Dry Contact Expansion (VT440)
Each unit adds up to 32 or 64 potential-free contacts.
Analog Sensors via VT408
Classic analog sensors can be connected via the VT408 expansion unit.
USB camera and long-term logs
Via the micro-USB port, a USB camera can be connected, which automatically records a JPEG image stream in the event of an alarm and thus provides visual confirmation of the event. For long-term storage of log data, the PDU-4M supports SDHC and SDXC memory cards up to 512 GB, enabling data storage for up to 5 years.
Full control via web interface, app, and protocols
The integrated web interface provides access to virtual sensors, logic schemes, and a wide range of notification types, and can be operated from anywhere in a mobile-friendly way.
- Notifications via email, FTP log, syslog, SMTP, SNMP traps, web-to-SMS, and push
- Supported protocols: DHCP, HTTP, HTTPS, DynDNS, SSL, SNMP v1/v2c/v3, SMTP, FTP, syslog, RADIUS, Modbus TCP/IP, OpenVPN
- Virtual sensors: PING, timer, trigger, logic schemes, SNMP GET, up to 4 IP cameras, virtual calculation elements, and more
- Outlet control via logic schemes, schedules, or manually in the web interface
Typical applications for the Didactum PDU-4M
The PDU-4M is suitable wherever individual loads need to be switched, measured, and, if necessary, remotely restarted in a targeted way.
- Data centers: power distribution within 19" racks and monitoring energy consumption of servers and network equipment
- Remote maintenance: restarting unresponsive systems remotely without needing to be on site
- Telecommunications: remote management of base stations, network switches, and signal amplifiers
- Automated restarts of systems in the event of faults via logic schemes
- Server rooms and technical cabinets with additional environmental monitoring requirements via the CAN port
- Energy metering of individual consumers for cost center or capacity planning
What is included in the box
Please check the scope of delivery for completeness upon receipt and report any missing or damaged parts to your supplier immediately. In the event of transport damage, please contact the responsible delivery service directly.
- Didactum PDU-4M Power Distribution Unit1 piece
- Schuko to C13 power cable, 0.75 mm², 230V/10A1 piece
- RJ-45 patch cable, 3 m (LAN/Ethernet)1 piece
- Micro-USB to USB adapter cable1 piece
- Connection terminal, 2-pole, 3.81 mm1 piece
- Self-adhesive rubber feet4 pieces
- Configuration guide1 piece
- Warranty card1 piece
Why the Didactum PDU-4M is the right choice
4 individually switchable outputs
On/Off, Reset, and Toggle can be controlled independently per outlet.
Precise energy measurement
Voltage, current, power, frequency, and energy per outlet with <1% accuracy.
Defined PowerUp state
Each outlet behaves exactly as desired after power returns.
Time-controlled switching
Individual schedule per outlet via graphical scheduler.
Integrated CAN bus
Up to 24 CAN devices can be connected for additional environmental monitoring.
USB camera support
Visual alarm confirmation via JPEG stream in the event of an incident.
Flexible mounting
Suitable for desktop or 19" rack installation.
Made in EU
Developed and manufactured in the European Union.
More about the Didactum PDU-4M
Device detail page & tutorial
Overview of the device, connections, dimensions, and all technical data in detail.
To the detail page →Frequently Asked Questions
How many outlets can be switched independently?
The PDU-4M has 4 IEC-320-C13 outlets (110–240V AC, 10A), each of which can be switched on or off, reset, or toggled individually — manually in the web interface, via the mobile app, or through M2M protocols such as REST API and SNMP.
What values are measured per outlet?
At each outlet, voltage (V), current (A), power (W), frequency (Hz), active power, apparent power, active energy (kWh), and apparent energy (kWh) are measured with an accuracy better than 1%.
What happens to the outlets after a power failure?
The "PowerUp state" parameter defines for each outlet whether it is automatically "On" or "Off" after power returns, before regular communication with the higher-level monitoring system is restored.
Can outlet switching be automated by time?
Yes. A graphical scheduler can be used to assign a separate schedule to each outlet so it automatically switches on or off.
How many CAN sensors can be connected to the PDU-4M?
Via the integrated CAN port, up to 24 CAN devices (sensors and expansions) can be managed in a chain, in addition to up to 300 more elements such as notifications, triggers, timers, and logic schemes.
The device does not start — what could be the reason?
First check the position of the "N…R" DIP switch on the rear side. If it is set to "R" (Restore), the device will not start normally. Set the switch to "N" (Normal) to restore regular operation.
Can a camera be connected for alarm confirmation?
Yes, a USB camera can be connected via the micro-USB port and will automatically record a JPEG image stream in the event of an alarm to visually confirm the incident.
Questions about the Didactum PDU-4M?
Our support team in Germany provides free advice on selection, installation, and configuration.
Suitable CAN expansion units
Suitable CAN sensors
Suitable sensors if you are using an extension unit:
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
