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The SDC Security Door Controls PTH-4QADI is a 4.5-inch electric hinge designed to carry low-voltage wiring through a door frame without exposed cables or conduit runs across the door gap. It integrates four conductors directly into the hinge body, allowing continuous power or signal transfer to electric locks, electromagnetic holders, door position switches, or access control readers mounted on the door leaf. Licensed locksmiths, security integrators, and commercial door hardware technicians are the primary installers of this product.
This hinge is suited for commercial door applications where concealed wiring is required to comply with architectural or code specifications. Typical installations include aluminum storefront doors, hollow metal frames, and wood doors with electric locking hardware. The four-wire configuration supports a range of low-voltage device types, including electric strikes, magnetic locks, and access control peripherals that require both power and signal conductors.
Designed as an OEM-style replacement or new-installation component for commercial doors requiring concealed conductor pass-through at the hinge point, compatible with standard 4.5-inch door hinge preparations.
Installation should be performed by a licensed locksmith or qualified security systems integrator familiar with ANSI door hardware standards and local building codes. Disconnect and lock out all power to the door control system before beginning hinge removal or installation. Verify conductor gauge and voltage ratings of the connected devices do not exceed the hinge wire specifications prior to termination. Do not route line-voltage wiring through this hinge.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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