# SDC Security Door Controls: Premium Access Control Hardware

> SDC Security Door Controls is a leading American manufacturer of premium access control systems, electromagnetic locks, electric strikes, delayed egress systems, and electrified mortise locks. Trusted security solutions for commercial and institutional facilities since 1972. All products are UL listed, ANSI Grade 1 compliant, and designed, engineered, and built in America.

Website: https://sdcsecurity.com  
Contact: https://sdcsecurity.com/contact  
Where to Buy: https://sdcsecurity.com/how-to-order

## Product Categories

- [Electromagnetic Locks](https://sdcsecurity.com/products/electromagnetic-locks): EMLock® series from 650lb to 1650lb holding force
- [1510 Series - 1650lb EMLocks](https://sdcsecurity.com/products/1510-series-1650lb-holding-force-emlocks): High-security magnetic locks
- [1570 Series - 1200lb EMLocks](https://sdcsecurity.com/products/1570-series-1200lb-holding-force-emlocks): Standard magnetic locks
- [1580 Series - 650lb EMLocks](https://sdcsecurity.com/products/1580-series-650lb-holding-force-emlocks): Traffic control magnetic locks
- [1575/1576 Gate Locks](https://sdcsecurity.com/products/1575-1576-electromagnetic-gate-locks): Weatherized gate magnetic locks
- [Electromagnetic Shear Locks](https://sdcsecurity.com/products/electromagnetic-shear-locks): HiShear® high-security shear locks
- [Delayed Egress Locks](https://sdcsecurity.com/products/delayed-egress-locks): Code-compliant delayed egress systems
- [Electric Strikes](https://sdcsecurity.com/products/electric-strikes): Electric door strikes for access control
- [IP-Based Controllers](https://sdcsecurity.com/products/ip-based-controllers): Network-based access control systems
- [Keypads & Readers](https://sdcsecurity.com/products/keypads-readers): Digital keypads and card readers

## Technical Resources

- [Document Library](https://sdcsecurity.com/documents): Product datasheets, installation guides, specifications
- [Installation Videos](https://sdcsecurity.com/videos): Step-by-step installation and product videos
- [System Design Guide](https://sdcsecurity.com/engineered-system-design): Engineered system design assistance
- [UL Listings](https://sdcsecurity.com/ul-listings): Complete UL certification information
- [Voltage & Wire Calculators](https://sdcsecurity.com/calculators): Wire gauge and voltage drop calculators
- [White Papers](https://sdcsecurity.com/white-papers): Industry solutions and best practices
- [Published Articles](https://sdcsecurity.com/published-articles): Technical articles and case studies

## Company Information

- [About SDC](https://sdcsecurity.com/about-sdc): Company history, patents, and awards since 1972
- [Sales Offices](https://sdcsecurity.com/sales-offices): Regional sales office locations
- [Contact](https://sdcsecurity.com/contact): Technical support and customer service

## Tools & Applications

- [SDC Toolbox](https://sdcsecurity.com/toolbox): Product selection and configuration tools
- [DoorSnap™](https://sdcsecurity.com/doorsnap): Door hardware specification tool
- [ShipQuick Inventory](https://sdcsecurity.com/shipquick): Fast-ship product inventory

## Optional

- [Photo Library](https://sdcsecurity.com/photo-library): Product images and application photos
- [Door Checklist](https://sdcsecurity.com/door-checklist): Door hardware specification checklist
- [SDC Free App](https://sdcsecurity.com/sdc-app): Mobile product catalog and tools
- [Literature Request](https://sdcsecurity.com/literature-request): Request printed materials

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*For comprehensive product documentation, see: https://sdcsecurity.com/llms-full.txt*