⚡ Reduxi Controller · Knowledge Base

Reduxi Controller: First-Time Setup with the Reduxi App

From creating your location, through Wi‑Fi and grid configuration, to adding your first device in the local interface.

⏱ approx. 15–20 minutes

🔧 Reduxi Controller · Smartphone/tablet with the Reduxi App

📄 Applies to all Reduxi Controller models

📋 In this article

Overview
Requirements
Create your Reduxi account
Create a location in the Reduxi App
Connect the Controller to the app
- Scan the QR code & find the device
- Connect manually (no QR code)
Initial setup of the Controller
- Set up the network connection
- Grid settings
Finish setup & notifications
Add your first device via the local interface
- Open the Configurator
- Add a new device
Summary
Common issues
Related articles

→ Overview

This guide walks you through the complete first-time setup of a new Reduxi Controller – from creating the initial location in the Reduxi App to adding your first device (e.g. an inverter) in the Controller's local interface.

ℹ️

Two interfaces, one process The initial setup runs through the Reduxi App (location, Wi‑Fi, grid connection, cloud connection). To add individual devices such as inverters, battery storage, or EV chargers, you then use the local interface (the "Configurator") directly in a browser – reachable via the Controller's IP address on your local network.

→ Requirements

Before you start, make sure the Controller is mounted and powered. What that takes depends on which variant you have.

No electrician needed

Stand‑alone enclosure

Plug‑in device · no special tools or qualification required

DIN‑rail module

Mounted in a distribution board · installation by a qualified electrician

Each variant ships with everything you need to power the Controller:

📦 Stand‑alone – package contents

Reduxi Controller (stand‑alone enclosure)
Power adapter, 230 V → 5 V (USB‑C)

⚡ DIN‑rail – package contents

Reduxi Controller (DIN‑rail module)
DIN‑rail power supply unit, 5 V

⚠️

Note for electricians – DIN‑rail installation Mounting the Controller inside a distribution board must be carried out by a qualified electrician, using standard hand tools. Switch off the relevant circuit breaker before starting. Use a 13A 1+N, type C circuit breaker on the power supply's input. Snap the Reduxi components onto the DIN rail, then wire a 2‑core cable from the power supply to the breaker (1.5 mm²), and continue on to the Controller with a cable of at least 1 mm².

Once the Controller is mounted and powered, make sure you also have:

Smartphone or tablet with the Reduxi App installed (iOS or Android)
A Reduxi cloud account – see Create your Reduxi account below if you don't have one yet
Credentials for the local Wi‑Fi network at the installation site (network name/SSID and password), if the Controller will connect via Wi‑Fi
Knowledge of the fuse ratings (L1/L2/L3) at the installation site's meter cabinet
Laptop or tablet with internet access, for reaching the local interface (Configurator)

💡

Planning which devices to connect? Reduxi supports a large and growing range of inverters, batteries, EV chargers, and meters. If you already have your Controller and know which devices you'll connect, this was most likely already confirmed and you can skip ahead.

🔍 List of supported devices 📚 Device setup guides

1 Create your Reduxi account

If you don't already have a Reduxi cloud account, create one before you start configuring the Controller. Registration is done directly in the Reduxi App.

Already have an account? Skip to Step 2 →

Sign-in screen of the Reduxi App with the 'Register a new account' option

Opening screen of the Reduxi App. Tap "Register a new account" if you don't have one yet.

Start registration

Open the Reduxi App and tap "Register a new account" on the sign-in screen.

Fill in your details (1/3)

Enter your first name, last name, and e‑mail address, then tap Next.

Registration form (1 of 3) with first name, last name and e-mail fields

Step 1 of 3: name and e‑mail address.

Set a password (2/3)

Choose a password with at least 8 characters, including one uppercase letter, one lowercase letter, one number and one special character. Enter it twice and tap Next.

Accept the terms (3/3)

Confirm "I agree with terms and conditions" and "I agree with privacy policy". The marketing consent checkbox is optional. Tap Finish registration.

Confirm your e‑mail address

Reduxi sends a confirmation e‑mail. Open it and tap Confirm your email before the link expires.

Once your account is verified, return to the app and sign in with the e‑mail address and password you just set.

Confirmation e-mail from Reduxi with a button to confirm the e-mail address

Confirmation e‑mail – tap "Confirm your email" to activate the account.

ℹ️

Trouble registering? If a field is highlighted in red, double-check that all required fields are filled in correctly. If the confirmation link has expired, request a new one and try again. Still stuck? Contact our support team at support@reduxi.zendesk.com.

2 Create a location in the Reduxi App

Every Reduxi device is assigned to a location – typically the physical place where the Controller is installed.

Welcome screen of the Reduxi App with the 'Configure Controller' option

Home screen of the Reduxi App after signing in.

Select "Configure Controller"

On the "Welcome to Reduxi" screen, under "Configure new Reduxi device", tap Configure Controller.

Allow access to the device's location

The app asks for permission to access the device's location. Tap ALLOW – this is what lets Reduxi show accurate weather data for the installation site (used for forecasts and energy-optimization). If you tap DENY, setup still works, but weather-related data for this location will be less accurate.

Permission dialog asking to allow Reduxi to access this device's location

Allow location access for accurate weather data at the installation site.

Enter a location name

On the "Location setup" screen, enter a name for this location (e.g. Example Home).

Location setup screen with a field to enter the location name

Enter a name for the location.

Choose the region

Select the country and region yourself – these are not detected automatically – then check the suggested time zone (e.g. Europe/Vienna) and correct it if needed, since some regions span more than one time zone.

Location region form with country, region and time zone fields

Country, region and time zone for the new location.

Confirm the coordinates and save

Check the pre-filled latitude/longitude (based on the location permission from step 2) and adjust the pin on the map if needed, then tap Save location.

Coordinates screen with latitude, longitude, a map and the Save location button

Coordinates of the location, shown on a map before saving (latitude/longitude fields blanked out in this image for privacy).

3 Connect the Controller to the app

Next, your smartphone or tablet is connected to the Controller so it can be configured. There are two ways to do this:

Fastest

📷

Scan the QR code

Camera access required · scans the code on the Controller's label automatically

🔧

Connect manually

No camera needed · join the Controller's own Wi‑Fi network by hand

Scan the QR code & find the device

Camera screen in the Reduxi App for scanning the QR code on the device

QR code scanner for connecting to the Controller.

Scan the QR code on the housing

Allow camera access when prompted, then scan the QR code on the Reduxi Controller's label.

Connecting to the device's Wi‑Fi

The app automatically connects your smartphone to the Controller's own Wi‑Fi access point (network name starts with Reduxi). This step can take up to a minute depending on the device.

Confirm the device

Once the device is found, the app displays its unique device ID. Tap Next to continue.

Confirmation screen 'Reduxi device found' with an image of the Controller

The Controller has been detected and your phone is connected to it – ready for configuration.

Connect manually (no QR code)

No QR code, camera access denied, or the code won't scan? You can connect the same way, just without scanning:

Tap "Add manually"

On the QR scanning screen, tap Add manually at the bottom right (this is separate from the "Where to find QR code?" hint, which only shows where the label is printed).

Join the Controller's Wi‑Fi network by hand

Open your phone's own Wi‑Fi settings and connect directly to the Controller's access point (network name starts with Reduxi, printed on the device label together with its password). Then return to the Reduxi App – it will detect the device the same way as after a QR scan, and you continue from "Confirm the device" above.

4 Initial setup of the Controller

During initial setup you define how the Controller connects to the internet and which grid-connection values apply.

Set up the network connection

The Controller needs a network connection to function. You can use a wireless network (Wi‑Fi), a wired network (Ethernet), or a mobile network (SIM card) – choose whichever is available at the installation site. At least one option must be configured before you can continue.

📶 Wi‑Fi 🔌 Ethernet 📱 SIM card

Initial configuration screen with the three options: wired connection, wireless connection and mobile connection

Initial configuration – choose wired, wireless, or mobile connection (the Controller's unit ID is blanked out in this image for privacy). After initial setup, the Controller's own Wi‑Fi access point is disabled, so Reduxi suggests setting up Wi‑Fi or Ethernet with a static IP address.

📶 Wireless connection (Wi‑Fi)

Tap Wireless connection (Wi‑Fi) on the initial configuration screen, then either select a network automatically or set it up manually:

Select the network and enter the password

Tap the Network name (SSID) field to pick your Wi‑Fi network from the list, then enter the matching password. If the network isn't listed, tap Refresh networks to search again.

Or set it up manually

If the network doesn't broadcast its name, or you'd rather not scan, tap Manual network setup to type in the network name (SSID) and password yourself instead of picking from the list.

Wireless connection config form with network name and password field, and a manual network setup link

Wireless connection config – select a network or use "Manual network setup" at the bottom.

Wi‑Fi also lets you choose how the Controller gets its IP address:

Automatic IP (DHCP) – the Controller gets its IP address from your router. You'll need to look up that IP address afterwards to reach the local interface.
Static IP – you set the IP address, netmask and gateway yourself. Recommended, since the address won't change over time; make sure it isn't already used by your DHCP server.

⚠️

Enter the Wi‑Fi password carefully Double-check the password before confirming with Next – a typo isn't always flagged right away, but it will prevent the Controller from joining the network, and the setup won't complete successfully.

🔌 Wired connection (Ethernet)

Tap Wired connection (Ethernet) if a network cable is connected directly to the Controller, then choose how it gets its IP address:

Wired connection config: choice between Automatic IP (DHCP) and Static IP

Wired connection config – Automatic IP (DHCP) or Static IP.

Automatic IP (DHCP) – the Controller gets its IP address from your router. You'll need to look up that IP address afterwards to reach the local interface.
Static IP – you set the IP address, netmask and gateway yourself. Recommended, since the address won't change over time; make sure it isn't already used by your DHCP server.

📱 Mobile connection (SIM card)

For Controllers with a SIM card installed, tap Mobile connection (SIM card) and enter the details provided by your mobile carrier:

Mobile connection config form with PIN, APN, username, password and dial-up number fields

Mobile connection config – PIN, APN, username, password, and dial-up number.

PIN – the SIM card's PIN code, if it has one
APN – access point name for your mobile carrier's data network
Username / Password – only if required by your carrier
Dial-up number – usually left at the default *99#

💡

Don't have a SIM card yet? Reduxi can also provide a SIM card for the Controller, against a one-time activation fee plus a monthly charge.

✉️ Email sales@reduxi.eu

Once a method shows a green checkmark, tap Save configuration. The app saves the settings to the Controller (this can take up to a minute), reconnects to it on the new network, and then saves the configuration to the Reduxi cloud.

Initial configuration screen with a green checkmark on the configured connection method and an enabled Save configuration button

A green checkmark confirms the connection is configured – tap "Save configuration" to continue.

✅

Recommendation For easier future access to the local interface, Reduxi recommends setting a static IP address for Wi‑Fi or Ethernet, so the Controller's network address doesn't change over time.

Grid settings

Once at least one network connection is configured, you'll be asked for details about the grid connection at the installation site.

Fuse ratings and import/export power limits for the grid connection.

Fuse L1 / L2 / L3 – per-phase fuse rating at the meter cabinet, in amps (e.g. 35)
Import active power limit (kW) – maximum power drawn from the grid
Export active power limit (kW) – maximum power fed back into the grid

The import and export power limits are normally derived from the fuse ratings you enter. If your grid operator specifies its own import/export limits, use those values instead of the fuse-based ones.

ℹ️

230 V / 400 V grids only This calculation assumes a standard 230 V (single-phase) / 400 V (three-phase) grid connection. For installations on a different grid voltage (e.g. 800 V), don't enter fuse ratings – enter only the import/export power limits specified by the grid operator.

⚠️

Double-check these values The fuse ratings and power limits should match the actual values at the meter cabinet, or the requirements set by your grid operator. Incorrect entries can lead to inaccurate grid monitoring or limiting. When in doubt, check with your electrician or grid operator.

The import/export power limits can also be left for later using Skip, and added afterwards in the location settings. Tapping Save stores the configuration on the Controller and in the Reduxi cloud.

5 Finish setup & notifications

Confirm the success message

The app confirms: "Device configured successfully". The configuration has been saved both on the Controller and in the Reduxi cloud, and your location has been created and is ready to use. Tap Add devices to continue – this opens the Controller's local interface, covered next. (Prefer to set up notifications first instead? That's covered as an optional step further below.)

Configuration completed screen with an Add devices card and an Open local interface button

Configuration completed – tap "Add devices", then "Open local interface" to continue to the Controller.

⚡ Already on the Controller's network? Skip notifications & tunnel – go straight to adding your first device

Otherwise, keep reading below for the notification setup and the remote tunnel connection.

Reaching the Controller: locally or via tunnel

To add devices or change settings, you need to reach the Controller's local interface (the Reduxi Configurator) from a phone, tablet, or PC. There are two ways to do this – no sign-in or password is required at the Controller either way.

Recommended on site

📶

Local network

Same Wi‑Fi/Ethernet as the Controller · fastest, no extra setup

🌐

Tunnel connection

Optional · remote access when you're off the local network

📶 Local network

If you're on site and connected to the same Wi‑Fi or Ethernet network as the Controller, no extra step is needed: open the local interface directly via the Controller's local IP address, or tap Open local interface right on the success screen above. Continue straight to adding your first device.

➡️ I'm on the local network – skip the tunnel

🔔 Finish setup instead (optional)

Prefer to set up notifications before adding any devices? From the success screen above, tap Finish setup instead of Add devices. You'll be asked about alarm push notifications for this location, then land on the app's dashboard. You can still add devices any time afterwards, from there or via the tunnel connection below.

Alarm push notifications dialog with Detected alarms and Resolved alarms checkboxes

Choose Detected/Resolved alarms, then confirm with Save preferences (or Show next time to decide later).

Reduxi App dashboard with energy-flow diagram and the menu icon highlighted

The location dashboard – values stay at 0.0 W until devices are added.

🌐 Tunnel connection (optional)

Only needed if you won't be on the same network as the Controller when adding devices – for example, when finishing the setup remotely rather than on site. From the dashboard, tap the ☰ menu icon at the top left to open the navigation drawer, then tap Reduxi devices under "Reduxi device management". Selecting your Controller opens its device page; under Connect to configurator, tap Activate tunnel connection to reach the local interface remotely.

Navigation drawer with the Reduxi devices item highlighted

Open "Reduxi devices" from the menu.

Device page with the Activate tunnel connection button highlighted

Tap "Activate tunnel connection" on the device page.

Reduxi Configurator opened remotely in a browser via the tunnel connection

The Configurator, now reachable remotely through the tunnel connection.

6 Add your first device via the local interface

Inverters, battery storage, EV chargers, and other devices aren't set up in the app – they're configured directly through the Controller's local interface, the Reduxi Configurator. It's reachable on your local network via the Controller's IP address, in any browser.

ℹ️

Requirement The smartphone, tablet, or laptop you use must be on the same network as the Reduxi Controller (e.g. the same Wi‑Fi) – or connected via the tunnel connection from the previous step. Either way, this works equally well from a phone/tablet or from a PC, as long as you enter the Controller's correct IP address.

Open the local interface in a browser

In your browser, go to the Controller's local IP address, shown on the success screen from Step 5 – or launch it directly from the app via "Open local interface". No sign-in or password is required, whether you're on the local network or connected via the tunnel connection.

Check the energy-flow overview

On the Home tab, the Configurator shows a live diagram of the grid, PV system, consumers, battery, EV, and other categories. Values remain empty until devices are connected.

Add a new device

The Devices section in the left-hand sidebar is where you add your first device – in this example, a SolarEdge hybrid inverter.

Reduxi Configurator home screen with the Devices sidebar and + Add device button highlighted

Tap + Add device under "Devices" in the left-hand sidebar.

⚠️

Important: enable communication on the device itself first Entering the correct connection details here isn't enough on its own. The device you're adding (inverter, battery, EV charger, etc.) must also be actively switched into a communication mode – e.g. Modbus TCP, Modbus RTU, or OCPP, depending on the device. This is done in that device manufacturer's own app or web interface, not in Reduxi. Only once that's enabled on the device side can the Controller actually establish communication with it.

How exactly to enable this varies by manufacturer and model – Reduxi supports a wide and growing range of devices, and many have their own dedicated setup guide:

📚 Browse device setup guides

Adding a device takes two steps:

Basic settings

Tap + Add device, then enter the device type (e.g. Hybrid inverter), type (manufacturer/model, e.g. SolarEdge), and a name of your choice for the device. Tap Next to move to the second step.

Basic settings step: device type Hybrid inverter, type SolarEdge, name SolarEdge

Basic settings – device type, manufacturer/model, and name.

Set up the communication channel

Fill in the fields to match the device – the numbers below match the screenshot – then test the connection:

1Connection: choose TCP/IP.
2IP address: enter the device's IP address, or let the Configurator search for it via Scan for IP.
3Port: keeps its default value of 502 unless the target device is configured differently.
4Extended IP recovery: should stay enabled, so the Controller can re-find the device if its IP changes later.
5Modbus unit ID: also generally keeps its default value of 1.
6Category toggles: set which categories the device covers – electricity meter, PV, and/or battery – as applicable.

⚠️

These values depend on the device TCP/IP, port 502, and Modbus unit ID 1 are the most common defaults, but the correct connection type, port, and unit ID always depend on the specific inverter, battery, EV charger, or meter you're connecting – check that device's own manual or manufacturer documentation if communication doesn't work with the defaults.

Communication channel and device configuration form, numbered: 1 connection type, 2 IP address and Scan for IP, 3 port, 4 Extended IP recovery, 5 Modbus unit ID, 6 category toggles

Communication channel – numbered points 1–6 match the description above.

Test the communication

Tap Test communication to check the connection before saving. If the device hasn't been switched into its communication mode yet (see the note above), the test fails with an error like "Unable to communicate with device". Once the correct protocol is active on the device side, a successful test reads back live values – power, voltage, state of charge, and similar, depending on the device.

Failed test communication dialog: unable to communicate with device

Test fails – communication isn't enabled on the device yet.

Successful test communication dialog with live battery, grid, inverter, load and PV readings

Test succeeds – live readings confirm communication is working.

✅

Added successfully Once the test succeeds, tap Done to save. The new device appears in the device list along with its type and associated categories (e.g. battery, grid, PV system) plus a success message. Use + Add device the same way to add further devices.

Device detail page for SolarEdge showing live Last measurements for Battery, PV and Load

The device's own page under "Last measurements" – live Battery, PV and Load data once communication is established.

✓ Summary

Account & location (Points 1–2): Create your Reduxi account and set up a location with the correct address, coordinates, and time zone.

Connect & configure (Points 3–4): Power up the Controller, join it to your network via Wi‑Fi or Ethernet, and complete the guided initial setup – grid connection values, DSO limits, and network settings.

Finish setup (Point 5): From the success screen, tap Add devices to go straight to the local interface. Prefer to configure notifications and check the app dashboard first? Tap Finish setup instead – that's covered as an optional step too.

Add your first device (Point 6): Use the local interface (or the tunnel connection) to add your inverter, battery storage, EV charger, or other device via the Configurator.

🔍 List of supported devices

Once everything is connected: check the dashboard, and consult Common issues if anything looks off – the Controller is then ready for daily operation.

→ Common issues

Issue	Solution
QR code isn't recognized	Make sure there's enough light and hold the camera at a steady, suitable distance from the label – use the torch icon in the scanner if it's dark. Clean the camera lens if the image looks blurry. If it still won't scan, tap Add manually at the bottom right and connect via the Controller's own Wi‑Fi network instead (see Connect manually).
Reduxi device isn't found	Check that your smartphone is still connected to the Controller's Wi‑Fi access point (in your phone's Wi‑Fi settings, not just the Reduxi App) – some phones disconnect from networks without internet access after a while. If it's disconnected, reconnect manually, then restart the Controller (power off/on) and repeat the connection process from the start.
Wi‑Fi connection fails or the Controller won't join the network	Double-check the network name (SSID) and password for typos – both are case-sensitive. Make sure the network is 2.4 GHz (most IoT devices, including the Controller, don't support 5 GHz-only networks) and that the signal is strong enough at the installation site. Retry with Manual network setup if the network doesn't appear in the list.
Local interface (Configurator) isn't reachable	Make sure the device you're using is on the same network as the Controller; re-check the current IP address in the app under Settings → Reduxi devices. If you're away from the local network, use the tunnel connection instead. If a static IP was configured, confirm it doesn't collide with another device on the network.
Tunnel connection won't activate or times out	Confirm the Controller has an active internet connection (Wi‑Fi, Ethernet, or SIM) and shows as Connected in the app. Tunnel connections can take a few moments to establish – wait and retry before assuming it has failed.
Weather data or forecasts look inaccurate	Check that location access was allowed during setup (see Step 2) and that the coordinates saved for the location match the actual installation site.
Grid monitoring or limiting values look wrong	Re-check the fuse ratings and import/export power limits under Grid settings against the meter cabinet and your grid operator's requirements – and confirm you used the correct method for your grid voltage (230 V/400 V vs. other voltages).
Test communication to the new device fails	First confirm the device itself has been actively switched into its communication mode (Modbus TCP, Modbus RTU, OCPP, etc.) in its own manufacturer app or web interface – this is the most common cause. Then check the target device's IP address, port, and Modbus unit ID, and verify its network or RS485 wiring. Make sure the device you're adding is on the same network as the Controller, and that no firewall is blocking the connection.

Related to