PowerPDU 4PS | NETIO products: Smart power sockets controlled over LAN and WiFi

NETIO PowerPDU 4PS is a smart PDU (Power Distribution Unit) with four power outlets (4x IEC-320 C13). Each output can be switched on/off individually. NETIO PowerPDU 4PS can be mounted in rack cabinets – horizontally, vertically, or as a 1U device. Integration into third-party systems using various protocols (JSON, Modbus/TCP, SNMP, MQTT-flex, Telnet, ...) is easy thanks to the open API. With the NETIO Cloud service, the outputs can be controlled from anywhere. The NETIO Cloud service, provided for a fee, uses SSL security and servers in Europe.


NETIO PowerPDU 4PS can be configured with a web browser (allows output control, connection to NETIO Cloud, Open API communication settings, etc.). 

NETIO PowerPDU 4PS does not support electrical measurements. Each output can be individually switched on/off or power-cycled. To switch the outputs on in a sequence, a power-up delay can be configured for each output.

The NETIO Mobile2 app controls each output individually over LAN (local network) or the NETIO Cloud service.

NETIO Cloud is a TLS-secured service for controlling the outputs from anywhere (Web or Open API). 

Open API allows controlling the outputs over the network using various protocols (http XML/JSON, Modbus/TCP, MQTT, SNMP, Telnet and more... ).

AV drivers make it easy to connect NETIO sockets to professional Audio/Video systems such as Neets, CRESTRON, Control4 and more. 



Professional product

NETIO PowerPDU 4PS is suitable for industrial applications. The product works in a wide temperature range (–20°C to +65°C), supports firmware upgrades over the web, remembers the last socket states before being powered off, and its relays switch at zero voltage.

A power-on delay can be configured for each output. In this way, the outputs can be switched on in a sequence after a power outage.


Open API: Supported M2M protocols

The open API can use one protocol at a time, chosen from among the supported M2M protocols:


Regardless of the Open API used, the PowerPDU 4PS can be always controlled from its web interface and from the NETIO Cloud service. The customer may use one Open API protocol and the NETIO Cloud service simultaneously.


Useful links:


Typical applications

  1. In IT, the smart PowerPDU 4PS is typically used to distribute electricity in a 19" rack (cabinet) in a data center.
  2. The connected appliances can be restarted from the web interface (each output can be switched on / off or power-cycled).
  3. The outputs can be controlled with the Open API (JSON, Modbus/TCP, SNMP, MQTT-flex, Telnet, ...)
  4. The device can work with various third-party programs and applications  (NETIO Drivery).
  5. The outputs of several NETIO products can be controlled using the NETIO Mobile 2 app (Android), as long as the app is connected to the same network.
  6. The outputs of multiple devices can be controlled centrally using the NETIO Cloud service (for a fee).


>> NETIO Usage cases


Ask for a price or technical parameters


This product can be connected to the NETIO Cloud service (100 outputs can be controlled from 1 web screen). NETIO Cloud is an ideal solution for remote control and restarting.
The paid NETIO Cloud service is operated by NETIO products a.s. as a support for manufactured equipment.

  • All products manufactured by NETIO products can be connected to NETIO Cloud.
  • The user can control connected devices securely via the web from anywhere (HTTPs).
  • The first 3 years are free connection to the service thanks to the "Welcome credit".
  • NETIO Cloud can be used in parallel with other Open API protocols.
  • Secure device communication to the Cloud service (port 8883 - MQTTs - TLS)
  • NETIO Cloud has its own Open API, which can be used to control all devices in a specific user account (MQTTS protocol).

>> More about NETIO Cloud service


Industrial product quality

NETIO PDUs are made with quality in mind. Each unit includes a set of supporting functions to ensure reliability and long service life of the product in real-life conditions.

  • Open M2M API
  • Wide operating temperature range (–20°C to +65°C)
  • PowerUp state – defined output state after power-up
  • PowerUp delay (outputs switched on after a delay)
  • Firmware upgradeable over the web, backwards compatibility
  • IOC -  Independent Output Control
  • ZVS – Zero Voltage Switching


ZVS (Zero Voltage Switching)

An important feature of the NETIO PowerPDU 4PS is ZVS (Zero Voltage Switching).

ZVS controls the exact time when the mechanical relay contacts close and open. The relay contacts switch the output on or off when the voltage crosses the zero level

  • In the long term, ZVS support reduces the product failure rate due to internal relay damage.
  • Since the relay switches when the sinusoidal voltage waveform crosses the zero level, negative effects of inrush current are significantly reduced.
  • The ZVS and PowerUp delay functions reduce the chance of circuit breakers tripping when power is restored after an outage.
  • ZVS extends the lifetime of connected equipment, especially in case of frequent on/off switching of devices that are not designed for that (such as switching power supplies).


>> Glossary: More about ZVS 


User can define output state after power restoring - PowerUp state

Power-Up state

For some applications, it is important to set the power socket state immediately after the device is powered on (or the power is restored after a failure). With some machines it is important to avoid momentary switch-on or switch-off. This parameter therefore defines the behavior of the 110/230V output power socket before the standard communication with a master system starts to work.

  • On
  • Off
  • LAST state restores the last state before the power was disconnected

Delay sequence when switching outputs on

After a power outage, some electrical appliances can be switched on with a delay to avoid overloading and tripping circuit breakers. With the PowerPDU 4PS, use these parameters: “Power-Up state” = ON / LAST, and “Output PowerUp interval” = power-up delay before switching that particular output on.


>> Glossary: PowerUp state



Mobile app controlled power sockets

Mobile App

PowerPDU 4PS can be controlled over the local network using the NETIO Mobile 2 app (for Android mobile devices).

  • The mobile app can be used to control several PDU units and all their outputs
  • The mobile device must be connected to the same LAN (connect the phone/tablet via WiFi).
  • NETIO Mobile2 can scan the LAN and discover connected devices. WiFi connection to the LAN is required.


For the moment, NETIO Mobile 2 application is not available for iOS users. We recommend using third party apps:


 >> NETIO Mobile 2


Scheduler (timed switching of individual outlets)

The switching of outlets can be time-controlled by the Scheduler with a graphical interface. Switching on/off at specific times can be easily configured.

  • Each output can have its own schedule, according which the output is switched
  • While Scheduler (calendar) is running, the output can be controlled from NETIO Cloud, web interface or Open API
  • The Scheduler does not require an internet connection (requires a time source – NTP server – for example a local ADSL / WiFi router)


>> More information about Scheduler



PowerPDU 4C / 4PS comparison

NETIO offers two versions, PowerPDU 4C and PowerPDU 4PS.


PowerPDU” designation (form factor) means that the product is intended for IT environment for installation in a 19” cabinet.

Accessories are available from the manufacturer to mount one 4C / 4PS unit (RM1) or two units side-by-side (RM2) into 1U of space in a 19” rack/cabinet. Other accessories allow mounting the product vertically, to the back, or to the side of the cabinet.


PowerPDU 4C

NETIO PowerPDU 4C is a PDU (Power Distribution Unit) with 4x IEC-320 C13 electrical outlets as outputs. Each output can be independently turned on or off and its consumption [Wh], current [A], TruePF and other parameters measured with a <1% accuracy.
PowerPDU 4C supports ZCS, includes a built-in 2x LAN ethernet switch and features a serial port (RS-232).  



PowerPDU 4PS

NETIO PowerPDU 4PS is a PDU (Power Distribution Unit) with 4x IEC-320 C13 electrical outlets as outputs. Each output can be switched on/off individually. The 4PS model does not support electrical measurements. 


General properties


Power outputs Smart switching
Serial Port
Lua scripts Scheduler 
PowerPDU 4C   4x IEC320 C13 ZCS 22 values 13 protocols
PowerPDU 4PS -

4x IEC320 C13

ZVS - - - - 7 protocols



Technical specifications


  • Lua support: No
  • Scheduler function: Yes
  • IP WatchDog function: No (planned)
  • Sending emails: No
  • Events Log: Yes (web)


  • Power input: 1x IEC320 C14 na 110/230V (10A)
  • Mechanical power switch: Yes
  • Power output: 4x IEC-320 C13 (max 10A)
  • Number of controlled outputs: 4
  • NETIO PowerPDU 4PS smart PDU for remote restarts 230C IEC-320 C13 outputsElectrical measurement: No
  • Number of metered outputs: 0
  • Internal consumption: Max 1,8 W


  • SPD - Surge protection: Yes, type 3
  • Switching element: relay SPST-NO, ZVS
  • ZVS (Zero voltage switching): Yes
  • IOC (output state independent from FW update): Yes
  • PowerUp state of outputs: On / Off / LAST state


  • Mechanical characteristics: Metal housing, 220 x 40 x 120 mm
  • Mounting position: Horizontal (1x / 2x) / vertical in a 19“ rack
  • Protection: IP30
  • Sound output: No
  • Temperature range: -20°C to +65°C
  • Designed and manufactured: European Union (Czech Republic , Prague)


Expand all

What is the difference between PowerPDU 4C and 4PS?

The 4PS model is simpler. It is intended for basic applications that require remote switching of power outputs.

PowerPDU 4PS does not support electrical measurements, RS-232 or Lua scripts. PowerPDU 4PS does not have buttons for direct control of the power outputs, and only has one RJ45 jack to connect to a LAN. 

What is the difference between MQTT and MQTT-flex?

MQTT-flex is a NETIO extension of the standard MQTT protocol. The extension uses a configuration text file to specify the MQTT message structure, the MQTT broker address where messages are sent, and the periodicity. In this way, a complete configuration of the MQTT communication can be transferred in a single text file.


Is it possible to specify in which state the output (power socket) will be after power-up?

Yes. When the PowerPDU is powered up, all outputs are set according to the PowerUp Init configuration (On / Off / LAST value). The parameter can be set in the web interface in the detailed configuration for each output.


I forgot the password, how can I reset the product to factory defaults?

To reset the product to factory defaults, press and hold the button next to the RJ45 jack. Keep the button pressed and plug in the product. Still keep the button pressed. About 12 seconds after powering up, the yellow LED flashes 3 times and factory default settings are restored (Load to defaults).


For the current procedure, see the supplied QIG (Quick Installation Guide) for the product.
It is available for download at this page as well as included in the product package

The NETIO Mobile app cannot find the NETIO PowerPDU 4PS.

For Android mobile devices, please upgrade to NETIO Mobile 2. For iOS mobile devices, NETIO mobile app upgrade is not available yet.

Can PowerPDU 4PS restart a device remotely?

Remote restart is useful e.g. to control the power to a router, where a simple “power off” action would make it impossible to send the subsequent “power on” action. With the Restart – “Short OFF” action (can be invoked from the web interface), it is possible to switch off the power e.g. for 5 seconds, and then the PowerPDU switches it back on automatically, without further user intervention.

Can PowerPDU 4PS switch on an output at a specified time?

The Scheduler (calendar) function is being developed. It will be available at the end of 2020.

If Scheduler function is not available in your device, update your firmware to highest possible version.

Is it possible to control the device using an IoT cloud?

Yes. Most NETIO products include an open API. We are continuously publishing ANxx (Application Notes) that describe how to connect the product to various third-party systems. 


Manual CS
Manual EN
Manual DE
Quick Installation Guide: 
Guide CS
Guide DE

Photo and video

Product comparison

  Connection Switched
Inputs NFC Web
Mobile App Open APIs
2xLAN 4xC13 4 ZCS RS-232 - Yes Yes Yes Yes Yes iOS

15 protocols

LAN 4xC13 4 ZVS - - Yes Yes - - Yes Android 10 protocols
2+2 2 ZCS / - 2xDI
Yes Yes Yes - - Yes Android 10 protocols
PowerBOX 3Px LAN 3x - ZVS - - Yes Yes - - Yes Android 10 protocols
PowerCable REST WiFi 1x 1 ZCS - Yes Yes Yes - - Yes Android 10 protocols
PowerCable IQRF IQRF 1x 1 ZCS - - - - - - - - IQRF


Available models

NETIO PowerPDU 4PS smart PDU with Open API such as SNMP, MQTT, Modbus, HTTP and more
PowerPDU 4PS Europlug

LAN PDU (Power Distribution Unit) rated at 110/230V, 4x IEC-320 C13 power outputs, LAN interface. Europlug power cable.

NETIO PowerPDU 4PS smart PDU with Open API such as SNMP, MQTT, Modbus, HTTP and more

LAN PDU (Power Distribution Unit) rated at 110/230V, 4x IEC-320 C13 power outputs, LAN interface. Swiss power cable.

LAN PDU (Power Distribution Unit) rated at 110/230V, 4x IEC-320 C13 power outputs, LAN interface. British UK power cable.
NETIO 4C can be installed with the 110/230V supply connectors at the front or at the back

Metal brackets to install one NETIO PowerPDU device into a 1U space in a 19” rack frame.

Metal brackets to install two NETIO 4C devices into a 1U space in a 19” rack frame.

Metal brackets to install two NETIO PowerPDU devices into a 1U space in a 19” rack frame.

Metal brackets to fasten one NETIO 4C device to a vertical bar in a rack frame.
NETIO RM3 4C vertical

Metal brackets to fasten one NETIO PowerPDU device to a vertical bar in a rack frame.

Universal metal brackets to fasten one NETIO 4C device e.g. to horizontal bars in a rack frame.
NETIO RM4 4C universal

Universal metal brackets to fasten one NETIO PowerPDU device e.g. to horizontal bars in a rack frame.

PWR adapter UNI to IEC-320

Adapter connecting many types of electrical plugs to NETIO 230C/CS. EU, UK, U.S., AU, Schuko , Switzerland and Italy plugs may be used. 


Lan ports: 
LAN ethernet switch: 
WiFi AP mode: 
Blue Tooth 4.0 LE: 
Serial port (RS-232): 
SMS Alerts: 
Email alerts: 
Mobile App: 
Scheduler (Chytrý kalendář): 
IP Watchdog Hearbeat): 
Warranty 2: 
6 Months
Protection 2: 
Rack montage: 
Product dimensions: 
340 x 58 x 90 mm
Product weight: 
1,18 Kg
Shipping package: 
420 x 65 x 130 / 1350 g
SNMP v1: 
SNMP v3: 
User certificates: 
MS Azure (MQTT): 
Power Output: 
4x DE (Type F - Schuko)
Power Input: 
230V AC
Power Output sockets: 
Power Input: 
Europlug - cable 1m
Power In max current: 
Max one socket current: 
Power fuse: 
External, mechanical
Current meter: 
Metered values: 
Energy meter: 
XML interface accessible in LUA: 
SNMP interface accessible in LUA: 
Web buttons accessible in LUA: 
CGI interface accessible in LUA: 
PING interface accessible in LUA: 
RS-232 accessible in LUA: 
Online demo IP address: 
Show download for mobile: 

Ask for a price or technical parameters

For device testing use name/password demo/demo