What Is August DoorSense? (All You Need to Know)

If you are currently doing your research about the best smart door locks, it is inevitable, you will stumble across August. August smart locks are one of the best on the market.

A few years ago, August introduced a few newcomers. Some of them were the new smart lock product line, but some new features were also introduced—like the August DoorSense.

So what is August DoorSense? August DoorSense is a feature that notifies you if the door is closed or opened. The August DoorSense is a built-in electromagnetic sensor found in August smart locks, that works in tandem with a small magnet to provide information on the door’s status.

August DoorSense

I did my research, and in this article, I will go in more detail about what the August DoorSense actually is, how it works, and what it can offer to you as a person that may be interested in the potential benefits of this neat feature.

How Does August DoorSense Work?

The August DoorSense works in a similar way window sensors work. This is why in addition to the smart lock, you will also receive a small sensor that communicates with the smart lock to determine whether or not the door has been closed properly.

Both devices will work in tandem. The smart lock will provide you with feedback on whether the deadbolt is locked or unlocked, and the DoorSense sensor will let you know if the door is closed or opened.

But how exactly does the August DoorSense work?

Door sensors, and window sensors, for that matter, work on the reed switch principle. The reed switch is an electromagnetic switch which is operated by a magnetic field.

The reed switch has two electrical connectors that are spaced apart when the door is opened. Or, in other words, when the magnet is away from the reed switch.

However, when the door is closed, the magnet will get closer to the reed switch and pull the two electrical connectors together, connecting them and closing the electrical circuit, which will be interpreted as a door that has been closed.

The reed switch will usually be found on the door’s smart lock, and the small mount that you will place on the doorframe is typically the magnet.

After installing the door lock and the magnet, you will have to calibrate them. This will allow the smart lock to determine when exactly (at what magnetic field strength) the door is closed.

Then depending on what is happening, the August app will notify you. (It is worth mentioning that the August DoorSense only works with the August app.)

On your August app, you will be able to see the status of your door. Currently, there are several different statuses:

  • A green circle: The green circle indicates that the door is closed and unlocked.
  • A broken yellow circle: The broken yellow circle will show if the door is both unlocked and open.
  • A broken red circle: The broken red circle will show if the deadbolt has been locked, but the door is not closed.
  • A red circle: The red circle indicates that the door is both locked and closed.

Don’t worry. You do not have to remember by heart what the different circles mean because, underneath each circle, the app will tell you what the condition of the door is. (Open | Unlocked, Open | Closed, Closed | Locked, etc.)

These notifications will show up in the August app’s activity feed the same way other notifications do.


Is August DoorSense Hard to Install?

Installing DoorSense

The August DoorSense requires a few preparatory steps in order to work correctly. Although the DoorSense capabilities are built into the August smart locks, you will also be required to install a small magnet on the door’s frame.

There are two main ways you can install the August DoorSense’s magnet, (1) buy mounting it on the surface of the doorframe, and (2) by mounting it flush, near the deadbolt latch plate on the doorframe, in which case you will need to cut a mortise.

The surface mount is the easiest one to install and requires only a screwdriver. The flush mount installation is more aesthetically pleasing and keeps the magnet hidden, but it involves drilling.


Do All August Smart Locks Have DoorSense?

Currently, all the newer August Smart locks support the DoorSense technology. The August DoorSense is available with the following August smart locks:

Yale Assure smart locks can also support the August DoorSense if you have the Connected by August module installed. The Yale smart locks that support DoorSense are:

  • Yale Assure Lock SL
  • Yale Assure Lock with a Touchscreen
  • Yale Assure Lock with a Keypad

The August DoorSense is supported only by the above mentioned smart locks. August and Yale do sell other smart security devices that are not capable of working with the August DoorSense.


Pros of August DoorSense

Extra Level of Security

You don’t need me to tell you that leaving your home with your front door left unlocked is a bad idea. Closing and locking the front door is, at least in my mind, one of those activities that people can do so often that it becomes almost a habit. A process, that runs in the background of your mind.

How often have you caught yourself walking away from your home saying to yourself, “Wait, did I lock the front door?” Only to find out that you did indeed lock it—but that process was so automated that you don’t have a memory of it.

This is dangerous for more than one reason.

First, it is not impossible to, indeed, forget to lock the door if you are in a rush. A lot of people have had that happen at one point or another in their lives. Even I am guilty of that.

Second, those thoughts of worry can stress you, cause unnecessary levels of anxiety, and pretty much ruin your day.

Many smart locks usually can notify you if the deadbolt is currently locked or unlocked. However, many of those may not be able to tell the difference between a door that was left slightly ajar and a fully closed one.

This is where August DoorSense comes into play. It makes sure that you stay updated on the condition of your door, potentially averting undesirable consequences.


Instant Auto-Lock Feature and Door Ajar Notifications

By using the DoorSense feature, you will be receiving notifications when the door has been left slightly ajar.

In addition to that, you will find that August smart locks have another really nifty feature—the Instant Auto-Lock.

And after installing the August DoorSense, you gain access to it.

The Instant Auto-Lock will automatically lock the door behind you after you close it. These features, which can be switched on or off in the settings menu, add another layer of security and peace of mind.

(And let’s not forget that The DoorSense works with Alexa as well.)


Cons of August DoorSense

Unreliable Notifications

Unfortunately, something that sounds good on paper may not translate too well into real life.

Since August DoorSense determines the status of the door by monitoring the magnetic field generated between the smart lock and the sensor, it is possible for false readings.

Any changes and disturbances to the magnetic field in the immediate area around the lock can impact the readings. For example, if you remove the front faceplate or place another magnet close to the lock, this will affect the reliability of the readings, and you will need to recalibrate the DoorSense and the lock.

I have found that some people are experiencing a lot of problems with properly calibrating their August DoorSense. Despite multiple attempts, the results are mixed. Sometimes the DoorSense stops working properly after a little while, and in other instances, it is not capable of recognizing when the door is open or closed.

It may interest you to know that users have found that there are some problems with the firmware, so they had to have the firmware on their August devices rolled back in order for the DoorSense to start working properly.


Installation Inconveniences

Although it is a small magnet that is easy to install, many homeowners may not really enjoy the idea that they need to place it on their door frame.

If they want the magnet to be hidden, this will involve drilling, which could also be perceived as a huge inconvenience.

What is more, the magnet’s installation on certain doors and door setups may prove trickier than expected.


Also Read:

How is August Smart Lock Powered?

Does August Smart Lock Need a Hub?

Does August Smart Lock Work With Android?

August Smart Lock Alternatives

Does August Smart Lock Work With Nest?

Photo of author


Edward Clark
Edward Clark, with 15 years of hands-on experience, is a distinguished expert in smart locks and home security systems. He holds a B.S. in Computer Engineering with a focus on Cybersecurity and is a member of the Electronic Security Association (ESA). His credentials include certifications from ASIS International, IAPP, CompTIA, NTS, and CEDIA. With expertise spanning risk management, electronic security, and data privacy, he's been featured in The Guardian, Forbes, Wired, and more. Edward's mission: guiding individuals toward secure homes using the latest technologies.

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