electrified hardware

Von Duprin QEL Device

I visited a jobsite today and saw some QEL devices in action.  If you're not familiar with the QEL device, it is a *quiet* version of the electric latch retraction exit device.  When the access control system (card reader, key fob, etc.) signals the door to unlock, the latch(es) retract to allow someone to pull the door open.  You can always exit by pushing the touchpad.  I have used the QEL device on several high-profile spaces where noise is an issue.  I recently specified them for auditoriums at the United States Institute of Peace and the Crystal Bridges Museum of American Art, where the latches are held retracted while the auditorium is unlocked.  As you can see in the video below, the touchpads are also held in while the latches are retracted so there will be no sound associated with exiting while the doors are unlocked.

By |2013-09-01T09:13:24-04:00August 10th, 2010|Electrified Hardware, Panic Hardware, Videos|0 Comments

“EL” vs. “E”

Last week I got a compliment about this site from a security consultant, and I asked him if there were any topics he'd like me to do a post about.  He said that a post on electrified lever trim (E) vs. electric latch retraction (EL) would be helpful since he spends a lot of time explaining the difference to his clients.  So Michael, this is for you, and everyone out there who has been wondering how to choose between the two.

By |2013-02-09T01:11:45-05:00July 2nd, 2010|Electrified Hardware, Panic Hardware|6 Comments

Schlage AD-Series Update

Yesterday I spent a few hours auditing a class on the Schlage AD-Series Electronic Locks.  If you haven't seen this lock yet, you should go to the website and take a look.  The whole idea behind it is that it's adaptable.  You can change the type of credential reader (keypad, mag-stripe, proximity/Smart Card/Multi-Tech reader) , the function (classroom/storeroom, office, apartment, privacy), or even the level of access control (offline, networked, wireless), and the changes can be made without taking the lock off the door.  So you install a stand-alone keypad lock today...tomorrow you can change it to a networked wireless lock with a Smart Card reader, and only the credential reader and inside escutchen need to be replaced.  The rest of the change is accomplished with free firmware.

By |2013-09-29T19:27:58-04:00June 24th, 2010|Electrified Hardware, Locks & Keys|0 Comments

TJ Bracket

When someone wants to install an electromagnetic lock on the pull side of the door, I feel like it's my civic duty to warn them that the installation will not be pretty.  I was finally able to get a photo of this application in the T.F. Green Airport today, so I'll be able to use it as descriptive evidence in the future.

By |2012-01-27T22:07:33-05:00May 19th, 2010|Electrified Hardware, Funky Applications|4 Comments


I went to see an architect on Friday, for what I thought would be a 2-hour meeting to discuss the security requirements for a new project.  3 1/2 hours later (time flies when you're talking about hardware!) I emerged to the sunlight (and the parking ticket), after literally resorting to cheerleading to get the architect through one more floor of the building (Her: "Lori, my brain hurts."  Me: "Come on!  You can do it!!").

By |2014-10-08T09:11:50-04:00March 21st, 2010|Electrified Hardware, Videos|3 Comments

Low Voltage License

Someone recently asked me whether a low voltage license is required for wiring electrified hardware in Massachusetts.  I asked my Panel of Experts and did some research on the Mass.gov website, and (regardless of what actually happens out in the field on a daily basis) a license IS required for connecting wires to electrified hardware in Massachusetts (actually two licenses - read on).

By |2017-05-25T15:39:21-04:00January 1st, 2010|Electrified Hardware|7 Comments

Schlage LiNK

The other day, one of my friends asked me about the new Schlage LiNK, which is a remote access system that connects you to your home from anywhere via cell phone or computer.  With the monthly subscription and Z-Wave enabled products, you can remotely control and monitor your door locks, check on your pets with live video, turn lights on and off, and control and monitor your home's heating and cooling system.

By |2014-01-29T13:37:10-05:00October 19th, 2009|Locks & Keys, Videos|2 Comments

Elevator Lobby Egress

Fair warning...this is going to be one of those posts that makes your eyes glaze over, especially if you haven't had your coffee yet.  But since I've seen several people come to my site looking for this information and leaving without it, I need to post about it before the next person comes looking.  I'll try to make it as concise as possible, and remember, the red italicized paragraphs are the code excerpts so you probably don't need to read those unless you're really digging into this issue.

By |2013-03-14T18:06:07-04:00October 5th, 2009|Electrified Hardware, Means of Egress|1 Comment

Violators Will Be Fined!

When a delayed egress lock is used on an egress door, the codes require signage instructing the building occupant to "PUSH UNTIL ALARM SOUNDS, DOOR CAN BE OPENED IN 15 SECONDS." When the code official approves a 30-second delay, the signage must reflect that increase.  At least the signage on this egress door (yes, there is an exit sign which is not visible in the photo) will keep the person occupied while he or she waits for 30 seconds to pass.  ;-)

Electric Latch Retraction?

Well...the latch is retracted and it involves a wire!  As a follow-up to yesterday's post about retrofit dogging accomplished with a tie-wrap, here's a photo from Brendan Daley of Horner Commercial Sales that was taken in a new hospital.  I'm guessing they weren't happy with the lock function so they came up with this ingenious solution.  I especially love the tape on the lever.  Thanks Brendan!

By |2012-01-27T22:10:02-05:00June 4th, 2009|Electrified Hardware, Funky Applications|0 Comments

Double Egress Pairs

Last week someone called me with a "quick question" about a double egress pair in a hospital.  The hospital wanted to install shear locks on a pair of double egress doors, to use during emergency lock-downs.  Unfortunately, as some of you have figured out by now, I don't usually have a quick answer.  There are actually two issues here:

By |2016-06-23T21:32:04-04:00May 26th, 2009|Electrified Hardware|4 Comments

Fail Safe Locks

I didn't want to scare anyone by adding more information to my previous post about stairwell re-entry, but I do get questions about how to accomplish this.  The stairwell re-entry requirements state that the stair side lever must unlock on fire alarm or on a signal from the fire command station depending on the code (there is always free egress from the non-stair side).  I have seen stair doors that had been retrofitted with card readers and electric strikes.  If these doors are required by code to meet the stairwell re-entry requirements, an electric strike is not an acceptable way to do this.

Electrical Power Transfer (EPT)

An EPT is an electrical power transfer, which is used to transfer wires from the door frame to the edge of the door.  It is used when there is a door-mounted piece of electrified hardware which requires power and/or sends a signal to a remote location.  The security consultants that I have worked with all prefer the EPT over electric hinges or door loops, which perform the same function.  It is also preferred over an electric hinge by most installers, because the EPT can be installed when the wiring connections are made, rather than being installed by the carpenter, removed for wiring, and reinstalled, getting mangled in the process.  The EPT is concealed when the door is closed (the door loop is exposed and prone to abuse) and it can accommodate larger gauge wires than an electric hinge. 

By |2012-01-27T22:10:41-05:00February 23rd, 2009|Electrified Hardware|11 Comments
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