Master Lock 5400D Select Access Key Storage Box with Set-Your-Own Combination Lock
- Hanging key storage box with combination access to 5 keys
- Large key storage compartment holds over 5 keys for house, car, or padlock
- Hangs from doorknob, fence, or just about anywhere
- Personalized, adjustable combination lock with 4 dials offers up to 10,000 combination possibilities for optimal security.
- Reinforced body withstands hammering and sawing
If you’re still hiding your spare keys under the doormat, it’s time for a better, more secure solution. The Master Lock 5400D Key Safe is a hanging unit that securely holds up to five keys. Compact and durable, this key safe will open only when you enter your personalized combination.
The Master Lock
5400D Key Safe
At a Glance:Reinforced metal molded body Holds up to five keys Up to 10,000 combination possibilitiesHangs from doorknob, fence, or postLimited lifetime warranty
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List Price: $ 36.12
Price: $ 17.99
1996-2000 Dodge Stratus Left Rear Door lock #A2
 | US $47.99 End Date: Thursday May-24-2012 23:54:30 PDT Buy It Now for only: US $47.99 Buy it now | Add to watch list |
Magnetic Locks
Article by Andrew Reed for Mr. Locks, Inc.
Magnetic locks, like electric strikes, use electromagnetism to control the locking mechanism. They rely on electric power, whether from a building current or a battery, and as a result they’re as dependable as a refrigerator, TV, or bedside alarm clock (though like any other household appliance they can also be vulnerable to power failure). But because no key is needed to operate magnetic locks, mag-locks can’t be picked – and you’ll never be locked out because you’ve lost the key.
The core of a magnetic lock control system is an electromagnet made of advanced metal alloys. When electric power activates it, the bolt slides in or out, up or down, along its U-shaped channel to lock or unlock the door. Some mag-locks also incorporate timing mechanisms that allow them to operate only at certain times – during business hours, for example. Others have “transaction memory,” which can record every use or attempted use. This function can be especially valuable with locks that use number-pads rather than coded cards: if an unauthorized person tries to gain access using incorrect codes more than twice, for example, the lock can automatically set off an alarm.
Magnetic locks work only with DC current, usually 12 to 24 volts. Many systems utilize batteries to provide the power, but others are wired into the building’s AC current, which is converted to DC by an internal transformer. Because the locking mechanism relies on the electromagnetic charge, mag-locks fail if the power fails, and the lock will open: they are fail-safe, meaning that they stop working if the power goes off. (Locks using AC power, like electric strikes, remain locked when the power goes out: they are fail-secure.) The best mag-lock designs use batteries, with converted AC current as a backup, or the reverse: they use the building’s AC current (converted to DC) with batteries for backup.
Whatever their power source, while access from the outside requires electric power, most magnetic locks can be opened from the inside without electricity, making egress in an emergency safe and reliable. One typical exception is in high-security applications like prisons, where both ingress and egress are controlled.
Magnetic locks are designed to read a variety of different coding mechanisms such as smart cards, proximity readers, and keypads. That versatility makes them ideal for both institutional or business use and for home use. If an employee is dismissed, for example, his or her magnetic code can be immediately deactivated, so that that single smart card no longer works. If a lock uses a numbered keypad, the coding can be changed quickly and easily, with the new code given only to those authorized. For home use, each family member can be given a different access code, making it easy to track when a delinquent teenager finally got home! The code can also easily be changed or deactivated if needed – in the case, say, of an intransigent former boyfriend or girlfriend, or an unfriendly divorce.
Another benefit of electromagnetic locks is that they’re silent. When you are “buzzed in” to an apartment building, that buzzer signals that AC power is being used – it’s the sound of AC current passing through an electric strike. But if you hear only the soft click of the bolt being released, it’s the silence of DC power, most likely using a magnetic lock. Generally, though, the AC strike lasts only as long as you hear the buzzer; after that, the door relocks. For home use, the silent magnetic lock is generally preferred.
Bear in mind that, as an electric appliance, magnetic locks must be properly installed to ensure that they’re not susceptible to fire. Although Do-It-Yourself aficionados can install their own battery-operated mag-locks, it’s always best to use a professional installer, who will also know the local safety codes that must be followed.
Now, for those who worry about these things, the power consumption of a magnetic lock – even one using AC power and a transformer – is so minimal as to be unnoticed on your Con Ed bill. And there’s no reason to fear having a “residual electromagnetic aura” hanging around your front door: you won’t!
Originally published: http://www.mr-locks.com/news.php?id=49
About the Author
Andrew Reed grew up in Asheville, North Carolina. He moved to New York in 1970, and following his undergraduate studies at Columbia University he became a marketing specialist with National Broadcasting and other companies. He returned to the WNC mountains in 1993, where he works as an editor, freelance writer, and marketing consultant. He operates a web-based editing and marketing company, http://www.myowneditor.com, and specializes in writing for web sites.
1991 Lexus ES 250 Right Front Door Lock #P63
 | US $49.99 End Date: Thursday May-24-2012 23:54:30 PDT Buy It Now for only: US $49.99 Buy it now | Add to watch list |
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Monstrous strength,
The masterlock select access storage box is a great product. I bought one for a slightly unusual purpose, in that I took it camping. For four weeks, this box was locked onto the frame of my station wagon, right next to the exhaust pipe. During that entire time, I used it several times without any problem. For the last two weeks, I found myself making hour-long treks over dirt roads, and across river beds every other day in a vehicle that was hardly designed for the task.
When I returned to civilization, I fully expected to find the box thoroughly abused. I expected the rubber case to have been melted by the exhaust pipe. I expected mud to have gummed up the combination locks. I even imagined there might be a few dents or scratches on it from the road. None of this was the case.
While my use of the box has revealed to me that it is not water tight, and the glue used to hold the rubber casing on may be a little weakened by heat or water, the worst damage I found on it were a few small scratches on the rubber casing around the lock part, where it had been attached to the frame of my car.
Recently, I managed to get a key stuck in the device somehow. Perhaps it no longer worked right because I removed the rubber casing. Maybe the long car key I put in jammed the locking mechanism somehow, or maybe I managed to accidentally reset the combination while it was open. I suspect that I reset the combination accidentally. My one complaint with this device is how easy it is to do this. Users can easily fix this by gluing or taping the reset switch in place once you’ve chosen a good combination.
Since I needed the key, I decided I would have to break open the device. Those of you concerned with the security of this product will be pleased to learn how hard it was to do.
As I had gotten the rubber casing off, I already knew that there were six rivets in the back. I imagined that by drilling through these, I would be able to get the lock apart. Using a bench vice, and a power drill with a metal drill bit, it took me five minutes of serious drilling to get through these rivets. When I was done drilling, nothing happened, because the rivets were set in such a way that the drill holes had gone in crooked. I ended up pounding away at the thing with a ball-pene hammer and a cold chisel for another half hour to break the rivets on the sides all the way through. This allowed me to rip off the sides of the front panel. Once that was done, I had to beat in the back of the lock so that I could get the chisel into the top, and force the locking mechanism open. The hinge was too strong for me to break at all. Once I got it out, my key was slightly twisted. I’m not sure it will still work.
All told, it took me fifty five minutes,to break into the master lock select access storage box. Fifty five minutes, using all the tools I could think of. At a private home, with it latched to a doorknob, or in an inconvenient place, it probably would have taken much longer. I don’t think there are many places where the police won’t get around to a criminal before they get at your keys in one of these things. I also don’t think a criminal who can get at the keys any faster would be able to use them once he got them out.
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|I have had TWO of these fail on me!!!!!!,
We invest in real estate and use lock boxes all of the time. This looked like a good buy. It even worked real well for a while.
Then one day it just would not open for my property manager (PM). She tried like crazy to get it open, then it finally popped open. After that it would open for ANY combination. One down…
Now I’m trying to sell my house so I put another one of these on my own house. I used this box every day to gain access to my house as it was MY key in the box. Well this one died too. I had a termite inspector coming to the house that day and he was not able to get in either. I had to climb through a window to gain entry to my house. I then removed the door knob so I could take this thing to my work bench where I was able to break into it.
That is another bad point about this lock. I hit it no more than 20 times hard with a normal hammer on the hinge at the bottom and it just opened right up.
So all around this thing is just a hunk of junk. I would avoid it.
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|Good when it works – disastrous when it is defective,
It’s definitely nice to have when it works. I won’t repeat the advantages of this lockbox in my review since they are listed elsewhere. When one got used relying on it and it doesn’t work all of a sudden, then the consequences can be really bad. This is what happened to me. I came home the other day and tried to get to my key. Well, the lockbox wouldn’t open. I know my combination is correct, no doubt. It’s easy to remember and I’m good with numbers. But the lockbox refused to open. Just picture yourself by your frontdoor trying to open your own door. Unfortunately there is no after-sale service in this case for this item. I could return it but why would I? My key is still inside and the thing costs $20. Just not worth it. Thanks a lot to the manufacturer for all the trouble they caused me.
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