The Latch Intercom’s brightness and volume are carefully calibrated during manufacturing to suit most outdoor environments.

If you would like to change either the brightness or volume, contact Door Support (doorman@door.com) to assist in remotely changing these settings.

Latch M, C, C2, and E-Genius

Latch M, Latch C, and Latch C2 are battery-powered and will continue working during a property-wide power outage. If your M Series (Generation 2) is wired and there is a power outage, it will switch to battery power automatically and revert to wired power when the power is restored.

Latch R

Latch R needs a constant power supply to function. We recommend a backup power source for R devices to avoid losing functionality during an outage. 

If power sources change and when power is restored, it is crucial to promptly update the reader to avoid disruptions to guest access and schedules.

Fail-safe and fail-secure

Proper wiring and programming of the R device are essential to ensure it behaves as fail-safe (unlocked) or fail-secure (locked) during a power loss, depending on the door hardware.

We recommend seeking guidance from your property installer for assistance with these settings.

Door State Notifications (DSN) is an optional feature for the Latch R that sends notifications to property managers based on door states. Notification emails can be configured to be sent to property managers when doors are left ajar or opened without a valid credential. This is a great way to improve the security of a building without hiring additional staff. Please note that additional sensors are required for this functionality.

Door States:

• Door Ajar: When a door is left ajar, a notification email can be configured to be sent after 30, 60, or 90 seconds.
• Door Still Ajar: If the door remains ajar, an email can be configured to be sent every 5, 10, or 15 minutes.
• Door Breached: When a door is opened without a valid credential, a notification email is sent.
• Door Secure: When a door is not in the Door Secure state and the door is then closed, a Door Secure notification is sent.

Automatic Unlock and Automatic Relock:

Two additional features that are an advantage of the sensors used for DSN, are automatic unlock and relock. The Latch R can be set to automatically unlock when it detects motion on the secure side of the door, allowing egress without manual intervention like pushing a button. The Latch R can also be set to automatically relock as soon as the door has been opened, preventing additional people from entering through an unopened door.

Subscribing and Unsubscribing from Notifications:

Please contact doorman@door.com to subscribe or unsubscribe from Door State Notifications.

Managing battery life at your property, whether one Latch device or many, is easy.

Low Battery Alerts and Reading Battery Life

Property Management:

If you are a Portfolio Manager or a property manager with device management permissions, you can expect to receive low battery notifications when devices at your property fall below a specific battery level, depending on the device type and assuming normal usage. Specifically, for the devices running on Firmware starting with G (C2, eGenius, Latch M), you will receive alerts when battery levels drop below 20%; M devices and C devices not running on G Firmware will send Low Battery Alerts at 15%.

If you'd like to check the battery life at your property, you may pull an Access Devices report via Reports at your Door Website or view the battery percentages in the Door App by selecting a door. 

Residents:

Residents can expect to see a red dot in the Door App when their Firmware would benefit from an upgrade or their device's battery has fallen below 15%. 

How do I change the batteries in a Latch device?

For steps on how to change the batteries in a Latch device, check out the steps in this article.

How long do batteries last?

• The Latch M's batteries should last 12 months under normal usage with 6 x AA Duracell non-rechargeable batteries.
• The Latch C2’s batteries should last 24 months under normal usage with 6 x AA Duracell non-rechargeable batteries.  
• The Latch C1’s batteries should last roughly 9 months under normal usage with 6 x AA Duracell non-rechargeable batteries.  
• The e-Genius Powered by Latch's batteries should last 18 months under normal usage with 6 x AA Duracell non-rechargeable batteries.  

Where can I find my device's battery life? 

To determine your device's remaining battery percentage, open the Door App, and select the door name. We recommend performing a Door Update first (tap 'Update' and then 'Update' again) to ensure you are seeing the most up-to-date battery reading. Then, go back to the device page and select 'Device Details,' where you can see your device's battery reading. 

How long can I expect the batteries in my Latch device to last?

• The Latch M's batteries should last 12 months under normal usage with 6 x AA Duracell non-rechargeable batteries.
• The Latch C2’s batteries should last 24 months under normal usage with 6 x AA Duracell non-rechargeable batteries.  
• The Latch C1’s batteries should last roughly 9 months under normal usage with 6 x AA Duracell non-rechargeable batteries.  
• The e-Genius Powered by Latch's batteries should last 18 months under normal usage with 6 x AA Duracell non-rechargeable batteries.  

How do I change the batteries on my Latch device?

If you don't manage your own Latch device, please request that your property manager change the batteries of your device to avoid any damage. If you do manage your own Latch device, below are the steps to change the batteries for your device. For all Latch devices, you'll also want to follow this guidance for battery changes:

• Replace ALL 6 AA batteries with new batteries of the same brand. Mixing and matching new and old batteries can cause battery failure and reduced battery life.
• Perform a door update using the Door App immediately after changing the batteries. Failing to update the device with the Door App after battery replacement can result in unreliable functionality or a disruption in guest access.

Latch M Devices:

1. Remove the Latch M's inner trim by removing the two screws on the top and bottom with a Phillips head screwdriver.
2. Replace the 6 AA batteries with AA non-rechargeable alkaline batteries, noting the polarity on the battery tray (for step-by-step instructions, please refer to the installation guide for your device).
3. Update the device using the Door App.

Latch C and C2

1. Remove the Latch C’s inner trim by removing the two screws on the top and bottom with a Phillips head screwdriver.
2. Replace the 6 AA batteries with AA non-rechargeable alkaline batteries, noting the polarity on the battery tray.  Also, note the tabs on the outer sides of the battery compartment and the polarity. You will need to slide the battery into place under these tabs before placing the second battery. (For step-by-step instructions, please refer to the installation guide for your device).
3. Update the device using the Door App.

Inductive Jumpstart allows certain Latch devices (with 3rd Generation Latch Lens) to be powered and unlocked in the event the batteries unexpectedly drain or fail, ensuring that you can access your unit by using a Qi-compatible power bank (such as the one linked here) to power the device.

Inductive Jumpstart is available on all Latch devices with a 3rd generation Latch Lens. To determine if your Latch device has a 3rd generation Latch Lens, select the door in your Door App and choose 'Device Details.' If the Firmware begins with 'G,' your device would be compatible with Qi charging. 

Watch our Inductive Jumpstart training video here or run through the steps below:

• Step 1 - Get a Qi power bank (such as the one linked here or a compatible 2-way power share enabled phone). 
• Step 2 - Turn the power bank on and hold the charging coil over the center of the lens.  Note that charging coils vary from device to device, but the center is a good bet.  It is ok if you need to rotate the thumb turn slightly to get it over the center.  
• Step 3 - You will hear a buzz as the device boots up. This means you have found the right location.  Keep holding the power bank or phone in power share mode in this location.
  
• Step 4 - While continuing to power the lens via the power bank, perform a BLE unlock with a device that has Door App access to the lock.  You should hear a click as the device unlocks.  
• Step 5 - Once you hear the click, you’re good to remove the power bank and unlock your device.  
• Step 6 - Replace the dead batteries before closing and locking the door again. Perform a manual door update.