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The SDC - SECURITY DOOR CONTROLS 100-3 is a 24-volt DC solenoid designed for use in door locking and access control applications. Solenoids of this type convert electrical energy into linear mechanical motion, providing the actuating force required to engage or release a locking mechanism. The 100-3 operates on a 24-volt DC signal, which is standard in low-voltage access control systems. Installation is typically performed by a licensed locksmith, access control technician, or security systems integrator familiar with low-voltage wiring and door hardware.
This solenoid is suited for commercial and residential door hardware assemblies where an electrically actuated locking component is required. It is commonly installed in electric strikes, magnetic lock assemblies, and related door control hardware. The unit is sold individually and is appropriate for retrofit or new installation scenarios where a compatible solenoid replacement or addition is needed within an access control or security door system.
Designed as an OEM-style replacement solenoid for 24-volt DC door locking and access control hardware assemblies.
Installation should be performed by a qualified locksmith, access control technician, or security systems integrator. Disconnect and de-energize the access control system and confirm the door hardware is unpowered before beginning work. Follow applicable local codes and manufacturer wiring guidelines for low-voltage DC circuits. Verify polarity and voltage at the terminal before energizing the solenoid after installation.
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