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SDC Manuals & User Guides

SDC (Security Door Controls) is a leading manufacturer of architectural hardware and electronic access control solutions, including electric strikes and magnetic locks.

Tip: include the full model number printed on your SDC label for the best match.

About SDC manuals on Manuals.plus

Security Door Controls (SDC) is a globally recognized manufacturer of premium architectural hardware and electronic access control products. Established in 1972, SDC specializes in the design and engineering of reliable security solutions for the commercial, industrial, and institutional markets. Their extensive product portfolio features electromagnetic locks, electric strikes, electrified mortise locksets, exit devices, and power transfer devices.

Headquartered in Camarillo, California, SDC develops products that are compatible with a wide range of door frames and looking mechanisms, ensuring seamless integration into existing security systems. The company is dedicated to providing high-quality, code-compliant hardware that enhances building safety and security control.

SDC manuals

Latest manuals from manuals+ curated for this brand.

SDC 101-SP External Speaker Installation Guide

June 17, 2026
INSTALLATION INSTRUCTIONS 101-SP External Speaker SECURITY DOOR CONTROLS ■ WWW.SDCSECURITY.COM [t] 800.413.8783 ■ 805.494.0622 ■ E-mail: service@sdcsecurity.com ■ 801 Avenida Acaso, Camarillo, CA 93012 ■ PO Box 3670, Camarillo, CA…

SDC S6303FH Hitower Exit Devices User Guide

May 21, 2025
QUICKSTART GUIDE REPLACING A HITOWER® LOCK SDC HiTower® locks have been in service for over 40 years. Through that time, the lock series has gone through significant changes. In the…

S4000 Series Division Access Control Hardware

User Guide
PL22, S4000 Series, S5000 Series, S6000 Series, S6300 Series, LR100 Series, IPRW Series, 918 Series, 920 Series, 923 Series, 926 Series, 75 Series, E76 Series, E77 Series, 295 Series, 700…

1511S Exit Check Delayed Egress Emlock

Instruction Manual
1511S Exit Check Delayed Egress Emlock, 1511S, Exit Check Delayed Egress Emlock, Check Delayed Egress Emlock, Delayed Egress Emlock, Egress Emlock

S6000E Electric Latch Retraction

Instruction Manual
S6000E Electric Latch Retraction, S6000E, S6000E Latch Retraction, Electric Latch Retraction, Latch Retraction, Electric Retraction, Retraction, S6100E RIM EXIT DEVICE, S6200E SURFACE VERTICAL EXIT DEVICE, S6300E MORTISE EXIT DEVICE

SDC manuals from online retailers

SDC 920P Indoor/Outdoor Entrycheck User Manual

920P • September 12, 2025
Comprehensive user manual for the SDC 920P Indoor/Outdoor Entrycheck, Prox and Keypad Reader, covering setup, operation, maintenance, troubleshooting, and specifications.

SDC support FAQ

Common questions about manuals, registration, and support for this brand.

  • How do I determine the correct HiTower lock model for replacement?

    To select the correct replacement model (Z75, ZR75, or ZY75), you must identify the position of the bullet nose projection relative to the latch, the solenoid orientation, and the existing lock function as outlined in the installation guide.

  • What power supply is required for SDC electric strikes?

    Most SDC electric strikes and locks utilize dual voltage solenoids (12VDC or 24VDC). Check your specific product voltage configuration instructions to ensure the correct power supply is used.

  • How do I contact SDC customer support?

    You can reach SDC customer support by calling (800) 413-8783 or by emailing service@sdcsecurity.com for technical assistance and troubleshooting.