Sentry: The Most Advanced Doorbell
Never miss a visitor
Get instantly notified when someone rings your doorbell. See and talk to your guest from your phone like a video call with Real 2-way Audio.
Busy or missed the notification? No worries. Sentry can automatically play a prerecorded voice message to your guest, and have them leave a voice message to you too.
No more false alarms
Tired of seeing false motion alerts from drive-by cars, swaying twigs, moving shadows? Sentry uses Advanced Motion Detection to only capture motion of people, so you will only receive notifications that are relevant.
Color Night Vision
Monitor your front door in vivid color and clarity, even at night.
You can also switch back to regular black-and-white night vision.
Local & Cloud Storage
The choice is yours! You can choose to store video clips on the cloud for up to 30 days, or store them locally with a micro SD card up to 128GB… or both!
 Bosma Asisst subscription required
 Micro SD card sold separately
Always know whether it’s a stranger or a familiar person at the door with Sentry’s Facial Recognition.
When a package is delivered to your door, Sentry will automatically notify you, so you don’t need to worry about when your packages are delivered.
Active Theft Prevention
Sentry protects your packages when you’re away. When Sentry detects that someone is stealing your package, it can automatic sound its built-in 100dB siren to scare off the thief.
Connect Sentry with Bosma Aegis smart lock and many other peripheral sensors to build a truly smart home.
Unlock your door with fingerprint*
Sentry can attach a fingerprint module that works with the BOSMA Aegis smart lock to enable fingerprint access to your door.
The fingerprint module also allows you to remotely unlock the door for your guests or family members and manage guest access.
*Sentry Fingerprint module required
A Better Doorbell Overall
|Ring Doorbell 3|
|Resolution||1920 x 1080||1920 x 1080||1600 x 1200||1536 x 1536|
|Field of View||180°||160°||160°||180°|
|Motion Detection||Advanced Motion Detection||Regular Motion Detection||Regular Motion Detection||Regular Motion Detection|
& Color Night Vision
|Active Theft Prevention||✔||✘||✘||✘|
|Storage||Cloud & Local||Cloud||Cloud||Cloud|