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🔐 Light up your security game with Master Lock’s smart key vault!
The Master Lock 5424EC Portable Key Lock Box offers a durable metal body with a weather-resistant cover, featuring large auto-illuminated dials for easy code entry in any lighting. Designed for indoor and outdoor use, it securely stores up to six keys with a customizable 4-digit combination lock and mounts conveniently over most door knobs, making it ideal for realtors, landlords, and property managers seeking reliable, accessible key security.

| ASIN | B01I5OG4X4 |
| Additional Features | Durability |
| Best Sellers Rank | #9,774 in Office Products ( See Top 100 in Office Products ) #32 in Security Lock Boxes |
| Brand Name | Master Lock |
| Color | Biscuit |
| Connectivity Protocol | Bluetooth |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,966) |
| Global Trade Identification Number | 00071649289071 |
| Included Components | portable dial lock box |
| Item Dimensions | 2.06 x 2.88 x 7 inches |
| Item Type Name | Set Your Own Combination Portable Lock Box with Light Up Dials |
| Item Weight | 1.25 Pounds |
| Lock Type | Combination Lock |
| Manufacturer | Master Lock |
| Manufacturer Warranty Description | Warranty |
| Material Type | Plastic |
| Model Number | 5424EC |
| Recommended Uses For Product | Secure storage of keys for homes, offices, and rental properties |
| Shape | Rectangular |
| Style Name | Set Your Own Combination |
| UPC | 071649289071 |
| Unit Count | 1.0 Count |
S**E
Great lock, especially for the price!
I just received mine. My impressions: It was larger than the picture makes it look. The locking box is about 2-3/4s square and 1-1/2 deep. From the top of the shackle to the bottom of the box is 5-1/4 inches. (approximates). The inside of the box for keys is 1-3/8ths wide by 1-1/8th tall. So your keys shouldn't be more than 1-3/8ths in length and not more than 1-1/8ths in width at the large end of the key. The box is about 3/4ths of an inch thick. I found I could get half a dozen regular house keys in easily and maybe more. Or maybe fewer keys with thick tops. May not handle long car keys with thick tops with remotes etc. In spite of the product description, I don't see any way a keycard could fit into this box. Most of these that I have seen are about the size of a credit card, which definitely will not fit in. If there are key cards out there that are the width and length of a house key, yes, then. But don't count on it unless you can find and cut out the "sweet spot" on the key card and put that in. Don't recommend. The rest of the box interior is composed of the locking mechanism. I found it held a lot of keys. Two nice features are the vinyl coated shackle and the padded back which prevent scratching of brass handles, knobs etc. Or chipping paint when they bump the doors. I read a lot of the reviews and was surprised at the number poor reviews. Although this is new to me, it appears to work just fine and appears to be strong and sturdy. The case is metal, not plastic. Plastic referred to, I think, in other reviews is the little plastic cover that fits over the combination rings. Not totally essential unless you use in a dirty location where lots of dust could get into rings or where ice may form on them. An issue for all these type of locks. Another plus for this item is that the door swings out and stops at a right angle to the case providing a "little shelf" for the keys to fall into instead of landing on the ground. The lockbox arrived with the combination set to 001. The factory default is 000. So you can see the box wouldn't open until I set the 1 to 0. I think this is done by the factory so the lock front remains in place and doesn't open in shipment. (My guess). This may be the reason for some of the issues with reviews. When you open the lock packaging, make a note of the combination that is showing when it first arrived. It is possible that that me become the factory default by error. But write it down anyway. Then set the combination to 000 and PRESS IN on the door to get it to open. It is necessary to press in on the door to get the latch door to open once you have the correct combination entered. If you just dial the right combination, the cover will remain in place until you push in on it. Then it sort of pops out at you. It is described as an indoor/outdoor lock. And it probably is. I am always a little suspect of these types of locks in heavy winter weather because if you get the thing coated with ice, obviously nothing will move. So if you think you will use it in severe weather, out in the open like a range fence or something, in freezing temperatures, you may want to encase it in plastic, or a Ziploc bag etc. Now for a little on operating the little device. Open the door and observe the interior. On the back wall you will see two brass Phillips screws. To the right of the right hand screw you will observe the base of the shackle with a tiny washer on the end. (You leave that alone.) Between the shackle base and the right hand screw you will observe the "reset pin". This is used to change the combination. To use the reset pin, you press it left with your finger and then pull it forward toward you until it stops. (A little L shape movement.) Left, then forward. It will remain in place. Now dial your desired combination on the combination rings, and reset the "reset pin" back to its original position. Push back and to the right. You now have your new combination. WRITE IT DOWN. If you have trouble remembering combination numbers, consider using the first three digits of a longer number you probably have memorized, and just dial the first 3 of that longer number. I don't suggest using your phone number or address numbers as that is pretty easy for someone to guess. Now, to attach the box to a door knob. You must have the front door latch open for this during the entire process. Look at the back wall of the lockbox. Between the two brass screws you will find the Shackle release pin. Slide the Shackle pin to the right and HOLD IT THERE while lifting the shackle upwards and out of the box. If you turn the shackle slightly the shackle release pin will stay in place and you can let go of it. Loop the shackle wherever you want it and close the shackle. The shackle pin will automatically snapback into place. This must all be done with the front of the box open. If you have a "Lever" type door handle, you may look at finding a fence or pipe nearby to attach the lock to or maybe attaching a padlock type hasp to the woodwork close to the door to attach it to. It is more having a box nearby than necessarily being on your door knob itself. (Door knobs can be pulled off be a determined burglar easily enough.) Now to close and lock keys inside, insert keys, and press front door closed TIGHTLY and HOLD IT TIGHTLY CLOSED while and until you rotate and scramble the combination rings. Now the front door is locked and will stay in place. When opening the box, line up your combination rings and PRESS IN ON THE FRONT COVER. If you forget to press in, it won't open. One reviewer suggested writing on the front cover "push to open" to clue others using it they need to press it before it will open up. Always sit and play with these devices for awhile until you totally understand the mechanisms before attaching to anything or putting keys inside in case you goof up and find it is locked and you can't release it. (If you have it locked to your door knob and can't remove it, you can remove the knob itself from the door and remove the box, then reinstall the door knob.) My opinion is that this is a great little box, especially for the price. Probably just as good as many of the other ones for twice the price. It looks nice, sturdy and well made. I don't understand all the negative reviews. But then this is a new arrival for me and I haven't tried it much. But I'm happy with it. Steve
E**H
Perfect.
Love it. Perfect for what I need it for. Heavy duty, and well built. Love that it lights up. Perfect for my business. Wish I could buy 20 more but they're so expensive!
R**M
Easy to work with
I like the light up dials, Easy to turn combos, easy to open and durable.
S**S
My go to lockbox!
Why did you pick this product vs others?: Works perfect, nice lighting!
F**W
Good lock...depending..
Very solid, slightly bulky, lockbox. It has two buttons you depress to open the spring loaded door after having put in the combination. Seems weather/water resistant. Ample space for keys, key fob etc.. For me, given the size of the lock, the "hoop" was slightly shorter than ideal - but, fully functional in most scenarios. The "hoop" would most likely not fit around standard door knobs (roughly 1 1/2"w x 1 3/4"(tall, at internal apex of curved arc). You can screw into a wall etc. for permanent storage/lock for your keys. NOTE: for those of you prone to put things together without the directions etc or, for that matter, who need glasses to read small print, please note that although the lock will most likely be set to all zeros, the actual combination (different than factory placement of the digits) is on a small sticker on the back of the unit...
C**.
Good product
Really happy with the design and quality.
R**Y
solid
This thing could likely take out an eye, it's so heavy and solid! Easy to set your code, easy to open and close and fits a set of car keys - only issue is that if it's one of the key fobs that will unlock your car when you get close I'm not sure how that will work for locking your car keys to it, but I guess we'll cross that path when and if we need to. We're just using it outside the house in case we ever lock ourselves out as I'm not a fan of hiding a key under a rock.
T**C
So far so good
Very easy to set up. Lights go on when you open the cover. Doesn't stay on long enough but it's not a deal killer. Cannot comment if water doesn't get in. I haven't tested that yet. I like the size of the box and can accommodate long keys which was important for us.
C**N
Sono davvero soddisfatta dell'acquisto. Il prodotto è solido, incredibilmente pratico per chi, come me, deve lasciare le chiavi , non disponendo di persona di fiducia cui consegnarle. Ho solo un problema , legato alla logistica della mia abitazione : nel mio caso, infatti, ( e soprattutto dati i tempi in cui viviamo ), dovendo io lasciare la cassaforte appesa ad un cancello condominiale, che si apre su una strada trafficata di Roma, ho sempre paura che qualche condomino o qualche passante possa temere si tratti di un oggetto pericoloso e faccia intervenire le forze dell'ordine perchè lo analizzino o....addirittura.....lo facciano "brillare" ! Spero che polizia, carabinieri e vigili urbani siano così evoluti da capire di che cosa si tratta !
M**Z
Muy buena relación costo calidad
A**O
Sencilla y fuerte
C**G
Bought to lock my car key during water plays and it serve the duty well. Offered cheaper than local stores and delivered sooner than expected which is even better
W**M
Dieses Modell mit 2 Öffnungsknöpfen, statt nur einem wie bei den gängigen Schlüsseltresoren, garantiert eine zuverlässige Öffnungsfunktion. Super zufrieden: Das Produkt ist super stabil, richtig schwer, wohl ca. 1 KG. Negativ: Innen fehlt zwar eine Möglichkeit den Bund an einem Schlüsselring aufzuhängen; dieses ist aber unbedeutend in Relation zum absoluten Pluspunkt: Dieses Modell besticht durch die intelligente Funktionalität, das es sich an varierenden Standorten verstecken lässt! Daher gehe ich davon aus, dass sich die Designer hier wirklich Gedanken über die wichtigsten "Uscases" gemacht haben, und da ist nun mal der Sicherheitsaspekt dabei das zentrale Kriterium; denn was nützt ein Schlüsseltresor, der im Ganzen aus seiner Verankerung gerissen und gestohlen werden kann, wenn die falsche Zielgruppe einen festen Standort mitbekommt? Auf diese Weise lässt sich das Ding sogar beliebig dort verstecken, wo nur eingeweihte es finden können!
Trustpilot
2 weeks ago
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