Access-control resources
Understand the system from the opening outward.
Use these guides to plan a new system, inspect an existing door, compare release hardware, decide whether to repair or replace, and review an installation proposal with better questions.
- OpeningDoor + frame
- ReleaseLock + hardware
- InputReader + credential
- DecisionController + rules
- InfrastructurePower + wiring
- OperationsPeople + support
A reader can be the visible part of the system. The opening, release hardware, control logic, power, wiring, and daily workflow decide whether the complete system works cleanly.
Choose the decision in front of you.
Start with the complete system, inspect an existing opening, compare hardware, or prepare better questions for a proposal review.
Commercial access-control systems guide
A practical Bay Area guide to commercial access control, including doors, readers, credentials, controllers, wiring, hardware, egress, and support.
↗Field guideHow commercial access control works
Follow the signal path of a commercial access control system — credential, reader, controller, power supply, and lock — and the four questions that verify a healthy opening.
↗Field guideAdd access control to an existing door
Learn what to inspect before adding access control to an existing commercial door, including the frame, lock, wiring, power, reader, and egress.
↗Comparison guideStrike vs. maglock vs. electrified lever
Compare electric strikes, maglocks, and electrified levers by door fit, release behavior, power, wiring, egress, maintenance, and approval needs.
↗Decision guideHow to choose an electric strike
A selection workflow for electric strikes on commercial doors: lock and latch compatibility, frame conditions, electrical requirements, fail state, and the field tests that prove the installation.
↗Comparison guideHES electric strike series guide
Compare HES and Folger Adam electric strike families — cut-in, shallow-frame, no-cut retrofit, glass-door, and surface exit-device strikes — with latch limits and fire-rating notes.
↗Comparison guideFail safe vs. fail secure
Compare fail-safe and fail-secure electrified locking, learn which side of the door each term describes, and verify the installed power-loss behavior.
↗Field guideMaglock release paths and egress
Understand how a magnetic lock holds and releases a commercial door, the five release paths every opening must demonstrate, and when special locking arrangements are permitted.
↗Field guideElectrified locks and power transfer
How electrified locksets, electrified trim, and power transfer hardware carry power and signal into a swinging commercial door, and what to verify before approving the work.
↗Decision guideRepair, retrofit, or replace?
Decide whether an access-control problem calls for repair, a targeted retrofit, or replacement after diagnosing the complete credential-to-door path.
↗Decision guideChoose an access-control installer
A Bay Area property guide to evaluating access-control installers and comparing proposals for doors, hardware, wiring, software, handoff, and support.
↗Ready to review the actual openings?
Elwin plans access control around the doors, frames, hardware, wiring paths, users, and property operations already in place.