PowerDIN 4PZ is a dual 110-230V / Max 16A electricity meter with LAN/WiFi and I/O, designed to fit on a DIN rail. Enables control over the Web, NETIO Cloud, Open API. Each of the 4 outputs can be switched on or off independently using the Web interface, or with Open API and NETIO Cloud. States of two dry contact digital inputs (including S0 pulse counts) can be also read remotely. Integration with third-party systems using various protocols (JSON, Modbus/TCP, SNMP, MQTT-flex, Telnet, ...) is easy thanks to the Open API.


NETIO PowerDIN 4PZ is a 2-channel 110-230V/ Max 16A electricity meter with relays at outputs and LAN (Ethernet) or WiFi connectivity.

  • The two metered 110/230VAC outputs can be switched off thanks to a built-in relay.
  • Two other outputs feature NO/NC relay contacts.
  • Two digital inputs can be used to connect push-buttons or S0 meters.


Using the product’s web interface, the device can be configured, the measured values can be read and each of the 4 outputs can be switched on or off.


Open API enables integration with third-party systems using a wide range of protocols (JSON, Modbus/TCP, SNMP, MQTT, Telnet, ..).

  • LAN or WiFi connection, NFC configuration
  • WEB interface
  • Channels 1, 2: metering + relay
  • Channels 3, 4: relay contacts
  • OPEN API: MQTT-flex, Modbus/TCP, Telnet, JSON, XML, SNMP, ..
  • ZCS – Zero-current switching
  • Mobile app: NETIO Mobile2 (Android & iOS)
  • Service: NETIO Cloud


NETIO Cloud is a SSL-secured service that allows controlling the outputs from anywhere (using a Web browser or Open API cloud services).  >> More about NETIO Cloud


The NETIO Mobile 2 app controls each output individually over LAN (local network) or NETIO Cloud. >> Více o NETIO Mobile


Open API allows controlling the device 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, ELAN, CRESTRON, Control4 and more.


Third-party partners provide various SW solutions that can be integrated with NETIO products (Nagios, PRTG, Grafana, Prometheus, Node-Red and more. 



Ask for a price or technical parameters

Documents to download

Flyer PDF
Manual PDF (CE)



Open API: Supported M2M protocols

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

The SNMP protocol can be always used in parallel to one of other APIs.

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


Useful links:


Typical applications

  • The PowerDIN 4PZ LAN/WiFi electricity meter is typically used for electricity metering and distribution in a DIN electrical cabinet.
  • Remote energy consumption monitoring in one or two circuit branches.
  • Connecting the pulse output of a 3-phase electricity meter to In1 or In2 in order to measure electricity consumption above 16A.
  • Each output can be switched on/off or power-cycled (e.g. to restart all appliances connected to the same circuit branch) from the web interface or the NETIO Cloud service.
  • Controlling the charging of e-bikes, boats and other appliances up to 3.6 kW (230V/16A). 
  • Controlling the outputs using Open API (JSON, Modbus/TCP, SNMP, MQTT-flex, Telnet, ...)
  • Integration with various third-party programs and applications.
  • Controlling the device from the NETIO Mobile 2 app as long as the app is connected to the same network.
  • The NETIO Cloud service, provided for a fee, enables central control of outputs of multiple devices in various locations.


>> NETIO usage examples

I/O = Relay outputs & Digital Inputs for buttons (Dry contact) + S0 pulse counter

  • Power Outputs 1 & 2 are two independently-metered 230V channels. Each power output can be switched on and off with a built-in ZCS relay.
  • DO (Digital Outputs) 3 & 4 are relay outputs. General-purpose NO/NC relay contacts can be controlled remotely. These two outputs do not support ZCS, and are not connected to the supply voltage.
  • DI (Digital Inputs) In1 & In2 can be used to connect any dry contact. DI input states are shown in the Open API. In addition, each input includes an S0 pulse counter for monitoring a water or electricity meter.


Output Measurements Switching Max. voltage/ current
Out 1, Out 2 A, W, Wh, TPF, V, Hz Relay (ZCS) 110-230VAC / 16A 
Out 3, Out 4  -  Relay 110-230VAC / 2A 
48VDC / 2A 




PowerDIN-4PZ smart electrometer with LAN and WiFi

LAN / Wi-Fi

The product can be connected to one network only at a time. When a live RJ45 (Ethernet) connection is detected, the product uses the LAN. When the RJ45 cable is disconnected or the link layer is inactive, the product switches to WiFi.

For the WiFi connection, the product uses an internal antenna. When installed a metal cabinet, its range will be very limited.

The WiFi connection can be configured using the AP mode.

  • For WiFi setup without NFC, the product features a built-in WiFi AP as well as a wizard to guide you through the selection of a WiFi network and configuring the connection. The mode switch button is located under the top panel.




NETIO PDUs have implemented HTTPs security.
The HTTPs is supported both for the WEB interface and for Open API protocols (JSON, XML). A customer certificate can be used.



The product can be connected to NETIO Cloud. Control hundreds of outputs from a single web screen. NETIO Cloud is an ideal solution for remote control and restarting. The NETIO Cloud service is a paid service.

  • All devices produced by the NETIO products company can be connected to NETIO Cloud.
  • Thanks to the included “Welcome credit”, the service can be used at no cost for the first 3 years.
  • Devices connected to the service can be controlled securely from anywhere over the Web (HTTPs).
  • NETIO Cloud can be used in parallel with another Open API protocol.
  • Communication with the Cloud service is secured (port 8883 - MQTTs - TLS)
  • NETIO Cloud uses a separate Open API (MQTTS protocol) to control all devices linked to a given user account. 

>> More about  NETIO Cloud 



Industrial product quality


ZCS (Zero current switching)

An important feature of NETIO PowerPDU 4C is ZCS (Zero Current Switching).

NETIO PowerDIN 4PZ can switch the metered outputs 1 and 2 when the immediate current crosses the zero level. ZCS significantly extends the lifetime of relay contacts when switching “problematic” appliances, such as LED lights or electric motors. 

  • ZCS (Zero Current Switching) means that the relays switch the outputs (1 and 2) at the moment when the current crosses the zero level.
  • In the long run, ZCS support reduces the product failure rate due to internal relay damage.
  • ZCS reduces the negative effects of a high inrush current.
  • Thanks to ZCS, the device can control switching power supplies (servers, computers and other IT equipment) up to the maximum rated power.
  • ZCS 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 ZCS


Power-up state

User can define output state after power restoring - PowerUp 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


Power-Up sequence (switching outputs on with a delay)

When the power is restored after an outage, electrical appliances can be switched on in sequence with certain delays in order to avoid an overload and the tripping of circuit breakers. With the PowerDIN 4PZ, use these parameters: “Power-Up state” = ON / LAST, and “Output PowerUp interval” = power-up delay before switching that particular output on.

>> Glossary: PowerUp state
>> Glossary: PowerUp sekvence


Power measurement

NETIO PowerPDU 4C is small PDU with power measurement and IEC-320 outputs

NETIO PowerDIN 4PZ measures electrical parameters for outputs 1 and 2 separately. Measured values are displayed in the web administration interface and are accessible via M2M protocols. PowerDIN 4PZ measures with accuracy better than 1% in the entire operating temperature range.

  • 2x Current [A]
  • 2x Load [W]
  • 2x Energy [Wh] – user-resettable counter
  • 2x Energy Out [Wh] – MID-compliant metering of energy taken from the grid
  • 2x Energy In [Wh] – MID-compliant metering of energy supplied to the grid
  • 2x TPF (True Power Factor)
  • 2x Reverse Energy [Wh]
  • 2x Phase shift  [-180...180°]
  • Voltage [V]
  • Grid frequency  [Hz]

>> More about electrical metering


Use cases for the remotely controlled electricity meter

  • Electricity consumption monitoring for machines in the manufacturing industry
  • Electric car slow charging control
  • Switching power outputs on and off with a mobile app
  • Remote consumption metering and output control from NETIO Cloud


Scheduler function (calendar)

With the Scheduler (timer) function, each output can be individually switched on or off at specified times and days of week. The switching times are easily configured in a graphical interface.
  • Each output can have its own schedule
  • When a schedule is active, outputs can still be controlled with NETIO Cloud, the web interface and Open API
  • Scheduler functionality can be enabled/disabled (not edited) for each output from the NETIO Mobile 2 app.
  • Scheduler does not need an internet connection. However, a time source is needed – provided over the internet or, for example, by a local ADSL / WiFi router.
  • For special usage the Scheduler can be combined with PAB (Power Analyze Blocks):
    • Switching time is based on current sunrise/sunset based on your location
    • Whatever happend, defined output can be switched off on defined time (midnight for example).
    • Ask for more..


>> More about Scheduler function


WatchDog Ping + Power

PowerDIN 4PZ is equipped with WatchDog PING (IP WatchDog) and WatchDog Power consumption (PAB).

  • WatchDog Ping continuously monitors whether a given process or a part of a system work as they should. If not, the WatchDog restarts the process. Can be used for all 4 outputs.
  • WatchDog Power is "Condition" & "Action" (PAB - Power Analysis Block & Rules) based autonomous system. It continuously monitors current (energy) of monitored device powered from any metered power output of NETIO PDU device.
    Only Output1 and 2 supports energy metering, so this feature can be used with Output1 and 2 only.

>> Glossary: WatchDog PING (IP WatchDog)

>> Glossary: WatchDog - Power consumption (PAB)


Mobile Application

This device can controlled from mobile App NETIO Mobile 2 (Android & iOS).
  • LAN: NETIO Mobile 2 can control all outputs of devices within local LAN (WiFi).
  • Cloud: User account on the NETIO Cloud service can be connected to the mobile app.
You can do with mobile app
  • Control individual power outputs – switch ON, switch OFF, RESET
  • Read power consumption data (A, W, Wh), if this one output (device) supports energy metering

  • QR code for NETIO Mobile 2 AndroidQR code for NETIO Mobile 2 iOSActivate / deactivate the week Scheduler function per each output
  • Sorting of outputs within groups (by function or location)
  • Output grouping – default group per one device can be changed individualy
  • Group control - Switch the whole group of outputs On / Off
  • Group control - Activate / deactivate the week Scheduler function for each output in whole group
  • Change output / device name (visible in the mobile application only)
  • Add multiple devices to the mobile app.
  • LAN discover: Search your LAN/Wifi network for NETIO devices.


>> NETIO Mobile 2

General properties

  Phases Switched
DO Relay
DI Inputs LAN WiFi Web NETIO Cloud WatchDog Scheduler Mobile App Open API
PowerDIN 4PZ 1 2 2 2 2 1 Yes Yes Yes Ping + Power  Yes iOS + Android 15 protocols


Technical specifications


  • LAN (RJ45): Yes
  • WiFi: Yes
  • Web: Built-in web server
  • Online demo: Yes (link)
  • FW upgrade: Yes – web (Download: FW Archive)
  • Mobile app: NETIO Mobile 2 (Android & iOS)
  • Installation without a Cloud connection: Yes
  • Control button: Yes (under the panel)



  • Lua support: No
  • Scheduler function: Yes
  • IP WatchDog function: Yes
  • Power WatchDog function: Yes 
  • Sending e-mails: No 


  • Power input: Terminal block (2.5mm2 / 22-14 AWG) 100-240VAC  (50/60 Hz) / max 16A
  • Power output: Terminal block (2.5mm2 / 22-14 AWG)
  • Digital Outputs: 4 in total
  • Metered outputs: 2 channels
  • DO Metered Power outputs + switching element: 2x Relay + ZCS (Out 1 & Out 2: SPST-NO) – Max 16A
  • DO Relay outputs: 2x Relay (Out 3 & Out 4: NO/NC) – Max 2A
  • Digital Inputs: 2 + S0 counter (4 bytes)


NETIO PowerDIN smart electrometer

  • Internal consumption: Max 2 W
  • SPD – surge protection: Yes, type 3
  • Switching element: Relay (Out 1, 2: SPST-NO)
  • ZCS (Zero Current Switching): Yes (outputs 1, 2)
  • IOC (output state independent from FW updates): Yes
  • PowerUp state of outputs: On / Off / LAST state
  • Power-Up sequence (switching outputs on with a delay): Yes


  • Mechanical: 108 x 91 x 62  mm = 6M (Standard DIN rail Unis - each 18mm)
  • Protection: IP20
  • Sound output: No
  • Temperature range: -20°C to +55°C
  • Designed and manufactured: European Union (Czech Republic, Prague)



Expand all

I forgot the password, how can I reset the PowerDIN 4PZ to factory defaults?

To reset the device to factory defaults, lift the top plate and press the button underneath it. Hold the button pressed and plug in the device. Keep the button pressed. About 10 seconds after powering up, the green 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, and a hardcopy may be included in the product package.

The description lists 2x 230V/16A output channels, can I connect two socket outlet circuits?

Each output 230V (Out 1, Out 2) can supply up to 16A. However, the input terminals of the device are rated at max 16A.

Only up to 16A in total may flow through the device.

Is it possible to switch 12V or 48V DC?

Yes, using relay outputs 3 and 4 only. Metered outputs 1 and 2 are connected to 230V mains.

What is S0 pulse counting? Does the device remember the count after a restart?

S0 is an industry-standard pulse output of electricity meters, water meters, gas meters, and so on.
In effect, these pulses correspond to the closing of a mechanical contact for 30 to 70 ms.

Yes, the device remembers the counter state even after a power outage. 

Does PowerDIN 4PZ support the Scheduler function?

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.


Does PowerDIN 4PZ include a surge protector?

Yes, level 3 protection is included. 


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.

The NETIO Mobile app cannot find the NETIO PowerDIN 4PZ.

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

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 SW systems.



Photo and video

Product comparison

  Connection Switched
Inputs NFC Web


Mobile App HTTPs Open APIs
2xLAN 4xC13 4 ZCS RS-232 - Yes Yes Lua scripts Ping Yes iOS

15 protocols

LAN 4xC13 - ZVS - - Yes Yes Condition
& Rules
Ping Yes iOS 
- 10 protocols
LAN 4xC13 4 ZCS 1xDI (S0) - Yes Yes Condition
​& Rules
Ping + Power Yes iOS 
- 10 protocols
PowerPDU 8QS LAN 8xC13 1+1 ZVS 1xDI (S0) - Yes Yes Condition
​& Rules
Ping + Power Yes iOS 
- 10 protocols
PowerPDU 8KS LAN 8xC13 8 ZCS 1xDI (S0) - Yes Yes Condition
​& Rules
Ping + Power Yes iOS 
- 10 protocols
2+2 2 ZCS / - 2xDI
- Yes Yes Condition
​& Rules
Ping + Power Yes iOS 
- 10 protocols
PowerBOX 3Px LAN 3x - ZVS - - Yes Yes Condition
​& Rules
Ping Yes iOS 
- 10 protocols
PowerBOX 4Kx LAN 4x 4 ZCS - - Yes Yes Condition
​& Rules
Ping + Power Yes iOS 
- 10 protocols
PowerBOX 4Kx WiFi


4x 4 ZCS - - Yes Yes Condition
​& Rules
Ping + Power Yes iOS 
- 10 protocols
PowerCable REST WiFi 1x 1 ZCS - Yes Yes Yes Condition
​& Rules
Ping + Power Yes iOS 
- 10 protocols
PowerCable 2PZ LAN
2x - ZVS - - Yes Yes Condition
​& Rules
Ping Yes iOS 
- 10 protocols
PowerCable 2KZ LAN
2x 2 ZCS 2xDI
- Yes Yes Condition
​& Rules
Ping + Power Yes iOS 
- 10 protocols



Available models

PowerDIN 4PZ

Dual 230V/16A electricity meter with LAN/WiFi and I/O.

NETIO smart power sockets


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: 
NETIO PowerDIN smart electrometer
Show download for mobile: 

Ask for a price or technical parameters

For device testing use name/password demo/demo