Master Lock Padlock, Indoor Personal Use Bluetooth Lock, 1-29/32 in. Wide, 4400D

An excellent lock from a name I trust. It's not laden with features (it is, after all, only a padlock), but it is a solid performer. Works as advertised, has no problems functioning in a steamy gym locker room environment. Unfortunately, I pretty much use this padlock exclusively in Locker mode since I have it on my gym locker. That means I am always entering the code on the dial instead of benefiting from the Bluetooth proximity activation feature (since my phone is always in my locker when I use this lock). That said, it does it's job well and has given me no problems or issues at all. One small bug: if you close and then quickly open the lock again before the lock's mechanism clicks, it will remain unlocked. Even if you close it, it will still be openable. The only way to make it lock properly again is to enter the code on the front of the lock (like you are unlocking it), and let the lock unlock. Then lock it again and do not attempt to open it until after the mechanism clicks. I can repeat this behavior, so it does seem to be some kind of bug, but at least it is easy to resolve without any complex steps to follow.

Love the lock but seems that it is slow to unlock and burns through the battery quickly

Pretty good lock. My only gripe is the app. Not as reliable as it could be. And be prepared for frustration when your iPhone updates its firmware and renders the Masterlock App unusable until Masterlock does its own update. Make a copy of your manual passcodes and store them on your preferred device in those rare instances that the Masterlock App will not work. At least you’ll be able to get the lock to open and get on with your day. Other than that, it’s made a huge difference getting in and out of my locker at work and not having to search around for lost/missing keys. Almost everyone these days has that one thing that life dictates is a must carry and that’s the cell phone. Perfect but for a few app snags every now and then.

I now have two of these locks. They work great, especially when you take the time to read and comprehend. The support is great as well, therefore, if you're having issues, it's a great idea to contact support as they are patient and know the product well; and will guide you through resolving issue. Once agent had me reference the document that came with the lock and pointed me to the information to resolve the issue, which let me know realize, most issues, you already have the information, if you just take a look at it. It will prevent a call to support and help you to learn the product.

This is the first review I've written on Amazon, but after the worst 3 days with a product, I had to review it. I received this on Monday 6-19. I downloaded the associated app, registered with the app and I thought all would be well. After reviewing the instructions it was a simple press of the center button once you register the product to use the app with the lock. But for some reason it was not working. After an hour of consulting the "user guide" and master lock's support website I was still unable to unlock the lock and remove it from the packaging. Finally I decide to remove the battery and try to "jump" the lock. This is a backup option that is available. But this option would not work either. Finally I decide to try another battery that I have at home and low and behold it works. So I got the lock with a preinstalled battery that was dead. So the following morning (Tuesday 6-20) I go and purchase a brand new battery to put in the lock as I don't want to use the one around the house incase it's almost dead. I proceed to use the lock Tuesday night at Planet Fitness and all works fine. Now comes today (Wednesday 6-21), I go to the gym and unlock my lock to put on the locker. After a 2 hour session at the gym, I go in to get my bag, keys, wallet, etc. and I can not open the lock. I press the center button and get nothing. I try the primary dial code and nothing. I pull the battery out to try the jump option and nothing. So I had to go to the front desk and ask them to cut the lock off of my locker because I had no way to get home, or buy another battery. This lock killed a brand new battery in less than 48 hours. So now I am out the cost of this lock because it truly is garbage. I wish I could leave a half star rating because the only good part was for the one day I actually got it to work, it did perform exactly as it should have.

We have a special needs son who cannot reach for or spin a normal locker. This was suggested for him by an Assistive Technology professional. We tried it and it did not work well with his locker set up. It was very tight around the shank. We worked with the school to figure out alternatives and tried a few but it did not work. We stopped using it. I reached out to the company to see if we could return it and they would not allow us to do so. I would not recommend this product. We bought something else and it works MUCH better!!!!

Besides little things, this is a super product. The app is a little clumsy, but it's a legit padlock and a reliable product. It really isn't that expensive compared to some other products out there, and I like the choice of Bluetooth over NFC. NFC is good, but there are some emerging concerns and problems that can happen with Android Pay and ApplePay running, too. Bluetooth is a lot more convenient right now. There is also a new feature in the app where you can set it so you can only unlock the lock if you have access to both the unlocked phone and the lock. This prevents people from being able to open the lock just because the phone is nearby.

It works great and is very secure except against a hammer. Of course the door itself can be opened with a hammer so it's great for the purpose it's designed.

Master lock tiene los mejores candado. Me gusto mucho las funciones que tiene. Puedes compartir una clave temporal a alguien a distancia. Es como mandar una llave por el celular. GENIAL.

I have only had this for a few days but it was very easy to set up and so far works great

After about two weeks having used the lock less than 10 times I couldn't open my padlock anymore. Nothing happened when pressing the 'wake up' button at the center Hance I was not able to open the lock at all. It was a very stressful moment for me as my wallet was in the locker as well as my car keys. Battery never showed any problem (device was only two weeks old) the light never turned yellow to indicate a low battery. Had to cut the padlock open with pincers. Hard to say that I am satisfied for something I bought for a bit less than 100 CDN and that laster less than 10 uses/ 2 weeks. Going to try to get reimbursed. It might be a faulty device but I don't want to take the chance and get another one to be honest. I did purchase it for the ease of use but it failed me.

This is a great product but it arrived with a battery that is almost dead. I had to re-order it as I ordered two of them one got delivered with a dead battery and the other one got delivered with no access code to register it to my app. Was on the phone for one hour for someone to try to figure it out