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)
  • 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 Mobile2 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. 


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:


Ask for a price or technical parameters

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 (Android), 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, or with the NFC interface and the NETIO Mobile2 app.

  • 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.
  • With the NETIO Mobile2 app and a NFC-capable phone, the product can be connected to a WiFi network in 60 seconds. 



The product can be connected to NETIO Cloud. Control 100 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


Mobile Application

Mobile app controlled power sockets

PowerDIN 4PZ 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 NETIO devices 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 is not available for iOS users. We recommend using third-party apps:

>> NETIO Mobile 2



Scheduler function (calendar)

The switching of outlets can be time-controlled by the Scheduler with a graphical interface

With the Scheduler function, each output can be switched on and off automatically at pre-defined times and days-of-week. A schedule is useful for saving energy and periodic restarts of other equipment. 

  • 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 about Scheduler function


NFC pre-config - Wi-Fi configuration in 60 seconds

NFC preconfig for easy and quick configuration of NETIO smart power strips

The WiFi network (SSID and password) to which the device connects at the installation site can be configured without even turning the device on. Our mobile application (NETIO Mobile 2) transfers the configuration from a phone or a tablet over NFC. This technology significantly reduces the installation time when connecting many devices to your WiFi network.

>> Read more about NFC-preconfig



General properties

  Phases Switched
DO Relay
DI Inputs LAN WiFi Web NETIO Cloud Scheduler Mobile App Open API
PowerDIN 4PZ 1 2 2 2 2 1 Yes Yes Yes  Yes 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 Mobile2 (Android)
  • Installation without a Cloud connection: Yes
  • Control button: Yes (under the panel)



  • Lua support: No
  • Scheduler 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.



Manual CS
Manual DE
Quick Installation Guide: 

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 Android - 10 protocols
LAN 4xC13 4 ZCS 1xDI - Yes Yes Condition
​& Rules
Ping + Power Yes Android - 10 protocols
PowerPDU 8QS LAN 8xC13 1+1 ZVS 1xDI - Yes Yes Condition
​& Rules
Ping + Power Yes Android - 10 protocols
2+2 2 ZCS / - 2xDI
Yes Yes Yes Condition
​& Rules
Ping + Power Yes Android - 10 protocols
PowerBOX 3Px LAN 3x - ZVS - - Yes Yes Condition
​& Rules
Ping Yes Android - 10 protocols
PowerBOX 4Kx LAN 4x 4 ZCS - - Yes Yes Condition
​& Rules
Ping + Power Yes Android - 10 protocols
PowerCable REST WiFi 1x 1 ZCS - Yes Yes Yes Condition
​& Rules
Ping + Power Yes Android - 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