Dahua Four Door two-way Access Controller

Put your entire entrance network under intelligent control with the 4-Door 2-Way Networked Access Controller from Communicate Systems. This web-based controller manages up to four doors with full two-way entry and exit control, and its browser-based administration means you can run everything from any PC on your network — no dedicated software required.

Scale is never a concern. With capacity for 100,000 users, 100,000 passwords, 100,000 cards, and 10,000 fingerprints, plus storage for 500,000 access records, it comfortably serves large workforces while keeping a comprehensive audit trail of every entry and exit.

Integration options are exceptional, with 9 × RS485 ports and 8 × Wiegand ports on board. Connect a wide range of readers and peripheral devices — from modern biometric terminals to existing legacy readers — and build the access ecosystem that fits your site.

Awareness extends beyond the doors themselves. Five alarm input channels and four alarm output channels let you tie in door sensors, sirens, strobes, and third-party alarm systems, turning the controller into a genuine security hub.