myIO Server V3Based on Arduino Due
Unbeatable value for money.
- Entry-level smart home controller
- SG-Ready and Energy Manager
- Homey, voice control, AI assistant
- Upgradable to V4 GIGA later
availableDetails →
PRODUCTS
Which myIO is right for me?
Three controllers, one system. You get an itemized price in the Studio, calculated for your own home.
myIO Server V4 GIGABased on Arduino GIGA
Power for large homes, an upgrade for V3.
Everything the V3 does, plus:
- Dual-core processor, Ethernet and Wi-Fi
- TLS-encrypted myIO Cloud
- From V3: swap the controller, keep the wiring
availableDetails →
myIO Server V4 OptaBased on Finder Opta, industrial PLC
Certified industrial hardware in your cabinet.
- Finder quality: CE, cULus, ENEC
- Expandable: up to 160 inputs and 160 outputs
- DIN rail, 12–24 V
- Native RS485: KNX, DALI, DMX, Modbus (beta)
coming soonDetails →
Detailed comparison
What can V3, V4 GIGA and V4 Opta do? Open a topic for the details.
Basics and hardware14
| Feature | V3 | V4 GIGA | V4 Optacoming soon |
|---|---|---|---|
| Controller hardware | Arduino Due | Arduino GIGA R1 | Finder Opta |
| Processor ProcessorThe controller’s processor and clock speed. A dual-core processor can truly run two tasks at the same time. | Cortex-M3, 84 MHz | dual-core, 480 + 240 MHz | dual-core, 480 + 240 MHz |
| Memory (RAM) Memory (RAM)Working memory: the more there is, the more connections, automations and logs the controller can handle at once. | 96 KB | 1 MB + 8 MB | 1 MB |
| Maximum outputs / inputs | 160 / 128 | 160 / 128 | 160 / 160 |
| Temperature sensors (DS18B20) | 40 | 40 | 40, via Expander 16 |
| Humidity sensors (DHT) | 8 | 8 | — |
| 0–10 V analogue input | — | — | 8 |
| Network | Ethernet | Ethernet + WiFi | Ethernet + WiFi |
| Sockets SocketsSimultaneous network connections: how many connections the controller can keep open at the same time. | 8 | 8 | 4 |
| Storage | SD card | SD card + internal flash | internal flash |
| Crypto chip Crypto chipA hardware security chip that stores the encryption keys in a protected way. | — | yes | yes |
| Power supply | 5 V + 5–24 V | 5 V + 5–24 V | 12–24 V DC |
| Mounting (DIN rail) Mounting (DIN rail)The space it takes on the DIN rail in the cabinet (1 module is about 18 mm). | 12 modules | 12 modules | 4 modules |
| Service display Service displayA small display in the cabinet that helps with commissioning and service. | yeson the controller | yeson the controller | yeson the Expander 16 |
Expanders and bridges6
| Feature | V3 | V4 GIGA | V4 Optacoming soon |
|---|---|---|---|
| I2C expanders (Ext32 In, Ext32 Out) I2C expanders (Ext32 In, Ext32 Out)32-input and 32-output expansion boards for the V3 and V4 GIGA main board. | yes | yes | — |
| myIO Expander 16 (RS485) myIO Expander 16 (RS485)16 inputs and 16 outputs on one board, on an RS485 bus, even far from the controller. | — | coming soon | yes |
| Expander standalone mode Expander standalone modeIf the connection to the controller is lost, the Expander 16 keeps running with its own settings, so for example the heating does not stop. | — | coming soon | yes |
| KNX Bridge KNX BridgeBrings KNX devices (switches, sensors, actuators) into myIO. | — | coming soon | beta |
| Modbus Bridge Modbus BridgeModbus devices: energy meters, inverters, heat pumps. | — | coming soon | beta |
| DMX Bridge DMX BridgeControls DMX512 lighting and effects, up to 64 fixtures per board. | — | coming soon | beta |
Heating, cooling, energy9
| Feature | V3 | V4 GIGA | V4 Optacoming soon |
|---|---|---|---|
| Zone-by-zone control | yes | yes | yes |
| Weekly timer, sunrise and sunset | yes | yes | yes |
| Groups, pump coupling Groups, pump couplingWhen any circuit of a manifold starts heating, its pump starts by itself. | yes | yes | yes |
| Heating and cooling lockout Heating and cooling lockoutA safety lockout, for example against floor overheating, or because of the dew point when cooling. | yes | yes | yes |
| Dew-point protection | yes | yes | yes |
| MIA self-learning heating MIA self-learning heatingmyIO Intelligent Assistant: continuously learns the heat loss and thermal inertia of the house and tunes the heating parameters accordingly. | — | coming soon | coming soon |
| SG-Ready heat pump SG-Ready heat pumpOn a schedule, the heat pump gets a signal when heating more is worth it and when to wait, for example in the cheap and the expensive hours. | yes | yes | yes |
| Energy Manager Energy ManagerUses your solar surplus inside the house: switches the boiler, the heat pump and other loads. | yes | yes | yes |
| Energy meter (SDM630) | yes | yes | betavia Modbus Bridge |
Lighting and shading4
| Feature | V3 | V4 GIGA | V4 Optacoming soon |
|---|---|---|---|
| Roller blinds, venetian blinds, curtains, gates | yes | yes | yes |
| Dimming (PWM or 0–10 V) | yes | yes | yes |
| DALI lighting (DALI Bridge) DALI lighting (DALI Bridge)Standard DALI luminaires and drivers: up to 64 devices and 16 groups per line, with built-in bus power. | — | coming soon | beta |
| DMX lighting (DMX Bridge) DMX lighting (DMX Bridge)Colour and effect lighting: a full DMX512 universe, up to 64 fixtures (dimmer, RGB, RGBW). | — | coming soon | beta |
Automations4
| Feature | V3 | V4 GIGA | V4 Optacoming soon |
|---|---|---|---|
| Sensor-controlled output Sensor-controlled outputA sensor value switches or regulates the output: adjustable hysteresis, heating and cooling mode, and mixer mode. | yes | yes | yes |
| Flow FlowRules without code: if this happens, do that. For example: if the window is open, stop heating that room. | — | coming soon | coming soon |
| myIO Script myIO ScriptProgrammable logic for complex tasks, for advanced users and professionals. | — | coming soon | coming soon |
| Webhook WebhookNotifies another service when something happens in the house. | — | coming soon | coming soon |
Control and remote access7
| Feature | V3 | V4 GIGA | V4 Optacoming soon |
|---|---|---|---|
| myIO App | yesAndroid, macOS | yesAndroid, macOS | yesAndroid, macOS |
| Web interface | yes | yes | yes |
| Voice control in Hungarian | yesAndroid | yesAndroid | yesAndroid |
| myIO Cloud myIO CloudSecure remote access from your phone, without port forwarding or router settings. | — | yes | yes |
| myIO Link myIO LinkConnects several myIO controllers into one system, for example a house and an outbuilding. | — | yes | yes |
| Remote software update Remote software updateSoftware updates arrive over the network; nobody needs to go to the cabinet. | yes | yes | yes |
| AI assistant (MCP) AI assistant (MCP)An AI assistant (for example Claude or ChatGPT) connects to myIO to answer questions, switch things and help with the setup. | yes | yes | yes |
Integrations5
| Feature | V3 | V4 GIGA | V4 Optacoming soon |
|---|---|---|---|
| MQTT, Home Assistant MQTT, Home AssistantStandard messaging: Home Assistant discovers the myIO devices automatically. | yes | yes | yes |
| Homey HomeyOfficial myIO app for the Homey platform: myIO devices appear in Homey. | yes | yes | yes |
| Shelly devices Shelly devicesBrings Shelly Wi-Fi relays, switches and meters into myIO. | — | coming soon | coming soon |
| Broadlink and Computherm Wi-Fi thermostats | yes | yes | yes |
| Alarm panel (SIA DC-09) Alarm panel (SIA DC-09)myIO receives the alarm panel’s signals and can react to them. | — | beta | beta |
Who is it for?
myIO Server V4 Opta
coming soonWhen you want certified industrial hardware in the cabinet: the Finder Opta PLC mounts on a DIN rail, runs on 12–24 V and has a native RS485 port for the KNX, DALI, DMX and Modbus bridges. For new homes, full or partial control, even heating and cooling only.
Details →myIO Server V4 GIGA
availableWhen the V3 is not enough: for bigger needs, more complex systems and heavier loads, and for anyone who wants the most modern smart home. Also an upgrade for V3 owners, on the existing wiring.
Details →myIO Server V3
availableFor new builds or renovations that need a reliable heating and cooling controller rather than a full smart home, where cost matters alongside stability and comfort.
Details →