Suprema DM-20

The Suprema DM-20 Door Module is a secure multi-door control expansion module designed to extend Suprema centralized access control systems with additional door, reader and I/O capacity. It can provide secure control for up to four doors and includes two Wiegand reader input channels for integration with compatible third-party card readers. The DM-20 communicates with Suprema master controllers such as CoreStation over RS-485 using OSDP V2, enabling encrypted and centralized door management. Its flexible I/O architecture includes four TTL inputs, four supervised inputs, six TTL outputs and four relay outputs, making it suitable for connecting door contacts, request-to-exit devices, locks, alarms and other field equipment. Its four relay outputs are rated at up to 2 A at 30 VDC for resistive loads, while the module operates from a 12 VDC power supply. The unit measures approximately 130 × 90.5 × 35.8 mm and supports an operating temperature range of -20°C to +60°C, making it suitable for installation inside secure access-control enclosures and electrical cabinets. Multi-colour status LEDs provide clear indication for power, relay activity, supervised and TTL inputs, outputs, RS-485 communication and device operation. By placing the DM-20 inside a secure enclosure away from the reader, organizations can also improve door security by keeping critical locking and relay connections protected from direct tampering. VEGA Digital IT Solutions LLC provides professional supply, installation and system integration of Suprema DM-20 Door Modules in Dubai and across the UAE. VEGA Digital can integrate the DM-20 with Suprema CoreStation, BioStar 2, Suprema readers, third-party Wiegand readers, electromagnetic locks, electric strikes, door contacts, request-to-exit sensors, emergency break-glass units, alarm interfaces and power supplies. Our integration services include access-control system design, RS-485 and OSDP configuration, Wiegand reader integration, supervised input wiring, relay and lock programming, door logic configuration, testing, commissioning, troubleshooting and future system expansion. By combining Suprema’s centralized controller architecture with VEGA Digital’s system-integration expertise, organizations can implement a secure, scalable and professionally managed multi-door access control solution for corporate offices, data centres, warehouses, commercial buildings, educational facilities and other security-sensitive projects throughout Dubai.