Styra Accessories You decide which functions Styra 3000 should have and can freely combine internal and external inputs and outputs. If you want to expand the system with new features, just to bring the desired function via expansion cards or additional control unit. Styra I/0 4400Accessory for installation on Styra 3000 Styra I/O 8800Accessory for installation on Styra 3000 Styra Komkort 4000Communication card for installation on Styra 3000 Styra Porttelefonkort 4400Entry phone card for installation on Styra 3000. Styra Porttelefonkort 4800Entry phone card for installation on Styra 3000. Related documents Aptus Styra 3000 Broschure (..pdf, 4.8 MB)