Electric strikes can be simplest to install when they are designed for one-for-one drop-in replacement of a standard strike, but some electric strike designs require that the door frame be heavily modified. Electronic strikes Įlectric strikes (also called electric latch release) replace a standard strike mounted on the door frame and receive the latch and latch bolt. This product triggered the evolution of electronic locks for the hospitality industry. The first card lock order was shipped in 1979 to Westin Peachtree Plaza Hotel, Atlanta, US. The first mechanical recodable card lock was invented in 1976 by Tor Sørnes, who had worked for VingCard since the 1950s. Because of this, many commercial doors (this typically does not apply to private residences) are moving over to stand-alone locks, or electric locks installed under a Certified Personnel Program. Most mag lock designs would not meet current fire codes as the primary means of securing a fire listed door to a frame. Additionally, power outages could affect mag locks installed on fire listed doors, which are required to remain latched at all times except when personnel are passing through. This could be a problem where security is a primary concern. Finally, mag locks fail unlocked, in other words, if electrical power is removed they unlock. This lag time can cause a user to collide with the still-locked door. Other problems include a lag time (delay), because the collapsing magnetic field holding the door shut does not release instantaneously. This means that in an emergency, a person must be able to move to a door and immediately exit with one motion (requiring no push buttons, having another person unlock the door, reading a sign, or "special knowledge"). Additionally, NFPA 101 (Standard for Life Safety and Security), as well as the ADA (Americans with Disability Act) require "no prior knowledge" and "one simple movement" to allow "free egress". This has caused fire marshals to impose strict rules on the use of mag locks and access control practice in general. One drawback is that improperly installed or maintained mag locks can fall on people, and also that one must unlock the mag lock to both enter and to leave. Mag locks are simple to install and are very attack-resistant. When the magnet is powered and the door is closed, the armature is held fast to the magnet. A large electro-magnet is mounted on the door frame and a corresponding armature is mounted on the door. The most basic type of electronic lock is a magnetic lock (informally called a "mag lock"). ( March 2016) ( Learn how and when to remove this template message)Ī deadbolt electronic lock mounted in a home safe Electromagnetic lock Unsourced material may be challenged and removed. Please help improve this section by adding citations to reliable sources. There are two basic types of locks: "preventing mechanism" or operation mechanism. Operating the lock can be as simple as using a switch, for example an apartment intercom door release, or as complex as a biometric based access control system. Electronic locks can also be remotely monitored and controlled, both to lock and to unlock.Įlectric locks use magnets, solenoids, or motors to actuate the lock by either supplying or removing power. Electric locks may be connected to an access control system, the advantages of which include: key control, where keys can be added and removed without re-keying the lock cylinder fine access control, where time and place are factors and transaction logging, where activity is recorded. Electric locks are sometimes stand-alone with an electronic control assembly mounted directly to the lock. ( March 2016) ( Learn how and when to remove this template message)Ī quick demonstration of an electronic door lockĪn electronic lock (or electric lock) is a locking device which operates by means of electric current. Please help to improve this article by introducing more precise citations. This article includes a list of general references, but it lacks sufficient corresponding inline citations.
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