Overview – Dahua ASC4202C-D | Double Door Two-Way Access Controller

The Dahua ASC4202C-D is a robust double-door two-way access controller built on a Linux platform with web-based management. Supporting up to 100,000 users, 100,000 cards, 100,000 passwords, 10,000 fingerprints, and 500,000 access records, it is ideal for high-capacity access control environments. The controller offers multiple authentication methods including card, password, fingerprint, QR code, or combinations of these, and supports RS-485 and Wiegand card readers. Advanced features such as anti-passback, multi-door interlock, multi-person unlock, first-card unlock, and remote verification enhance security. It also manages alarms for duress, tamper, intrusion, unlock timeout, and power issues. With the ability to supply power to 2 locks and 4 card readers simultaneously and optional battery support, it is designed for flexible, reliable, and secure access control in commercial or institutional settings.

Key Features:

• Linux-based access controller with web interface
• Supports 100,000 users, 100,000 cards, 100,000 passwords, 10,000 fingerprints, 500,000 records
• Multiple unlock methods: card, password, fingerprint, QR code, or combinations
• Compatible with RS-485 and Wiegand card readers
• Advanced security features: anti-passback, multi-door interlock, multi-person unlock, first-card unlock, remote verification
• Alarm management: duress, tamper, intrusion, unlock timeout, illegal card use, power failure, undervoltage
• Fire alarm linkage via independent port
• Supplies power to 2 locks and 4 card readers
• Supports battery backup (sold separately)
• TCP/IP, P2P, auto registration, and DHCP supported
• Compatible with SmartPSS Lite, DSS Pro, and DMSS platforms