Overview
SDC/Security Door Controls 491-BB Blue Surface Mount Box
SDC/Security Door Controls 491-BB Blue Surface Mount Box Overview The SDC 491-BB is a blue surface-mounted enclosure designed for the SDC 491 access c…
SDC/Security Door Controls 491-BB Blue Surface Mount Box
Your recommended setup
Review items below — quantities update pricing automatically.
Bundle Summary
Overview
SDC/Security Door Controls 491-BB Blue Surface Mount Box
Overview
The SDC 491-BB is a blue surface-mounted enclosure designed for the SDC 491 access control platform. This controller manages up to 4 doors and supports up to 250,000 user credentials, making it suitable for mid-scale deployments across commercial and institutional facilities. Operating at 30VDC, the unit integrates with HID-based credential systems and communicates via OSDP and TCP/IP protocols for secure, networked access control.
Compatibility
The 491-BB housing is engineered for installation with the SDC 491 controller platform. It supports HID credential readers and integrates into access control systems requiring OSDP or TCP/IP communication. The enclosure is appropriate for indoor surface-mount installation in secured entry points, server rooms, administrative areas, and multi-door access zones.
System Design, Deployment & Technical Support
Support services and planning resources for commercial surveillance, access control, and infrastructure deployments.
Fixed scope • Fixed price
System Design Assistance
- Get help validating product compatibility
- Coverage requirements
- Storage planning and deployment architecture before you buy.
Deployment & Configuration Support
- Access fixed-scope support for rollout planning
- User setup guidance
- Migration and system standardization across single-site or multi-site deployments
Guides, Tools & Calculators
- PoE requirements
- Storage retention
- Camera selection and deployment methodology