Gira 228426 smart home central control unit accessory

KNX installers and smart home integrators use the Gira 228426 as a compact logic module and IP gateway in DIN rail enclosures. It runs visualization, logic processing, and automation functions for up to 250 data points, making it suitable for residential and light commercial KNX projects.

Key specifications

• Product type: KNX Logic Module / Smart Home Server
• System compatibility: KNX
• Mounting type: DIN rail (4 TE)
• Power supply: KNX Bus (24 V DC) or external 24 V DC
• Network interface: 1x Ethernet RJ45 (10/100 Mbit/s)
• Bus interface: 1x KNX Bus connection
• Supported data points: up to 250
• Supported logic blocks: up to 1250
• Supported timers: up to 250
• Supported scenes: up to 250
• User interface: Gira Smart Home App (iOS/Android), web browser
• Configuration software: Gira Project Assistant (GPA)
• Processor: ARM Cortex-A8
• Internal memory: 512 MB RAM, 4 GB eMMC Flash
• Protection class: IP20
• Operating temperature range: -5 °C to +45 °C
• Power consumption: max. 3 W
• Housing material: plastic
• Colour: light grey / white

Why choose it

This module centralizes logic and visualization, eliminating the need for separate controllers. Its IP gateway function enables remote access and integration with the Gira Smart Home App.

Ideal use cases

• KNX installations requiring logic and scene management
• Projects needing remote visualization via app or browser
• DIN rail setups with limited space (4 TE width)

Good to know

Configuration is done via Gira Project Assistant. The device is powered directly from the KNX bus or an external 24 V DC supply.