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- 2K Video Resolution (HDR)
- 2-Way Talk
- Color Night Vision
- IP65 weatherproof Rated
- -20°C to 50°C Operating Temperature
- Compatible with Lorex App
$149.99
Frequently Bought Together
Features
See who's at the door, greet guests with the nightlight, answer the door from anywhere, play pre-recorded messages when someone rings, and talk to those on the other side with Lorex's new 2K wired video doorbell.
4K Doorbell Specifications
B451AJD / B451AJDB
SPECIFICATIONS
2K
RESOLUTION
More than 2× 1080p HD resolution
164°
FIELD OF VIEW
Ultra-wide diagonal viewing angle
32GB
MICRO SD
Maximum capacity 256GB microSD card
With impressive 2K resolution you will have clear video quality.
See more with a 164° viewing angle and 4:3 aspect ratio showing you the full picture.
HDR automatically corrects exposure when lighting is not ideal.
Communicate with Pre-Recorded Messages
Communicate with Pre-Recorded Messages
Use 1 of 3 quick responses to greet visitors who ring your doorbell. You can even record your own custom message to add your personal touch or speak directly through the doorbell using 2-Way Talk.
Shed Light on your Doorstep
With the nightlight feature, you can program the LED light to turn on at a selected time. For added security, the LED light can be activated when motion is detected to deter unwanted guests.
Shed Light on your Doorstep
With the nightlight feature, you can program the LED light to turn on at a selected time. For added security, the LED light can be activated when motion is detected to deter unwanted guests.
Color Night Vision
People coming towards your door will be always visible thanks to its Color Night Vision and low light capabilities.
Color Night Vision
People coming towards your door will be always visible thanks to its Color Night Vision and low light capabilities.
No Monthly Fees
Local storage means No Monthly Fees. With the included microSD card, you will have ample storage and your video recordings remain safe and secure.
No Monthly Fees
Local storage means No Monthly Fees. With the included microSD card, you will have ample storage and your video recordings remain safe and secure.
Detect
Receive a Lorex App notification message the moment someone enters the doorbell's customizable motion detection range.
Record
Thanks to a pre-recording feature, the doorbell will automatically start recording 5 seconds before the event starts so you don't miss any action.
Ring
Lorex App will automatically send you a notification telling you that there is someone at the door.
Answer your doorbell with Alexa™
Be notified when someone rings the doorbell, as well as answer it without using your phone. You can easily pull up the live feed on the video screen of your hub or use it with Firestick to view video on your TV. For more information about current smart home integrations, visit our Smart Home Guide.
Build your security the way
you want with the Lorex
Easily grow your security by adding Lorex Fusion Wired and Wi-Fi Cameras.
All-in-One Security
Connect all of your devices to one recorder with secure local storage for enhanced privacy and protection.
24/7 Recording
Record continuously to your NVR’s local (and upgradeable) storage with no monthly fees.*
One App Access
Remotely monitor and control your Lorex devices from anywhere using the Lorex app.
*To conserve battery life, Lorex Battery-Operated Doorbells and Cameras cannot record 24/7 continuously to the Fusion Recorder’s local hard drive.
Mounting Bracket Wedges Included
Customize your 2K Video Doorbell installation to fit your needs with the two included mounting bracket wedges.
Support Articles
Doorbell Comparison Chart
B241AJD 1080p Wired Video Doorbell |
B451AJD, B451AJDB 2K Wired Video Doorbell |
B463AJD, B463AJDB 2K Battery Video Doorbell |
B862AJD, B862AJDB 4K Wired Video Doorbell |
|
|---|---|---|---|---|
| Resolution | 1080p / 2MP (1920 × 1080) | 2K / 4MP (2560 × 1920) | 2K / 4MP (2560 × 1920) | 4K / 8MP (2160 × 3840) |
| Aspect Ratio |
|
|
|
|
| Color | Dark Grey | White, Black | White, Black | White, Black |
| Detection | Person | Person | Person | Person, Vehicle, Animal, Package |
| Power Options (Voltage) | Wired (16-24VAC) | Wired (16-24VAC) | Built-in Battery, Wired (8-24VAC) | Wired (16-24VAC) |
| Storage | 32GB Included (Upgradable to 256GB) |
32GB Included (Upgradable to 256GB) |
32GB Included (Upgradable to 256GB) |
32GB Included (Upgradable to 256GB) |
| Network Connectivity | 2.4GHz Wi-Fi | 2.4GHz / 5GHz Wi-Fi* | 2.4GHz / 5GHz Wi-Fi* | 2.4GHz / 5GHz Wi-Fi* |
| Chime Kit | Not Included | Included | Not Included | Included |
| Lorex Compatibility | Fusion, ACCHM2 Wi-Fi Chimebox |
Fusion, Lorex Smart Home Security Center, ACCHM2 Wi-Fi Chimebox |
Fusion, ACCHM2 Wi-Fi Chimebox |
Fusion, ACCHM2 Wi-Fi Chimebox |
| Third-Party Compatibility | Alexa, Google Assistant | Alexa, Google Assistant | Alexa, Google Assistant | Alexa, Google Assistant |
| Communication (Audio) | 2-Way Talk, Quick & Custom Response |
2-Way Talk, Quick & Custom Response |
2-Way Talk, Quick & Custom Response |
2-Way Talk, Quick & Custom Response |
| Night Vision | IR / Color | IR / Color | IR / Color | IR / Color |
| Operating Temperature | -4°F / -20°C - 122°F / 50°C | -4°F / -20°C - 122°F / 50°C | 14°F to 122°F / -10°C to 50°C | -4°F / -20°C - 122°F / 50°C |
*Due to Industry Canada (IC) restrictions, your 5GHz Wi-Fi network may not be supported if you are located in Canada.
Video
Product Specifications
| Max Video Resolution 2K | (2560 × 1920) |
|---|---|
| Aspect Ratio | 4:3 |
| Video Modes | 2K, 1080p (default), D1 |
| Video Features | HDR |
| Max Lens Field of View | 164º diagonal |
| Nightlight / Warning Light | Yes |
| Quick Responses | Yes |
| Night Vision | Night Vision, high powered Infrared LEDs (850nm) with IR Cut Filter |
| Indoor/Outdoor | Outdoor, IP65 rated |
|---|---|
| Digital Zoom | 8x |
| Microphone | Microphone with noise cancellation |
| Speaker/Siren | Yes |
| Audio | Full Duplex 2-Way audio |
| Network Connectivity | 2.4/5Ghz 802.11b/g/n/ac |
| Operating Temperature | -4°F to 122°F / -20°C to 50°C |
| Power Requirements | 16V ~ 24V AC / 12 ~ 24V DC |
What's Included?
Dimensions (WxDxH): 5.1" x 1.8" (130mm x 45mm)
Weight: 1.17lbs / 0.53kg
Package Contents:
2K Video Doorbell
Mounting bracket
Horizontal bracket 15°
Vertical bracket 5°
Pre-inserted microSD Card
USB Cable
Anchors and screws (x2)
Wire caps (x3)
Pin
microSD card (pre-inserted)
Chime Kit
Wire harness
Backup cable
Extra wires (x2)
15/64” Drill bit
Product Support
B451AJ Series - 2K Wired Video Doorbell