Get FREE shipping on orders over $100

  • 2K Video Resolution (HDR)
  • 2-Way Talk
  • Color Night Vision
  • IP65 weatherproof Rated
  • -20°C to 50°C Operating Temperature
  • Compatible with Lorex App
Wired Smart Doorbell

2K Wired Video Doorbell (32GB)

Sale price$149.99
Build and Personalize your own security system exactly the way you want with our new tool. Start Building.
  • 2K Video Resolution (HDR)
  • 2-Way Talk
  • Color Night Vision
  • IP65 weatherproof Rated
  • -20°C to 50°C Operating Temperature
  • Compatible with Lorex App

Safe & Secure

Apps are protected with end-to-end data encryption.


Risk Free

Return for any reason within 30 days of delivery.

bi secure payment

Flex Payments

Spread out payments with easy financing options.

No Monthly Fees

Local recording protects privacy and saves money.

Frequently Bought Together



2K Wired Video Doorbell

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.


B451AJD / B451AJDB




More than 2× 1080p HD resolution



Ultra-wide diagonal viewing angle



Maximum capacity 256GB microSD card

works with google assistant works with amazon alexa

Compatible With Lorex Smart Home Security Center

This device can be added to the LSHSC along with other indoor and outdoor Wi-Fi cameras, video doorbells, floodlight cameras, and alarm sensors.

2K Doorbell Main Features

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.

Two-Way Talk

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.

Quick Response and Two-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.

Night Vision

Color Night Vision

People coming towards your door will be always visible thanks to its Color Night Vision and low light capabilities.

Local microSD Storage

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.

Remote Monitoring with Lorex App


Receive a Lorex App notification message the moment someone enters the doorbell's customizable motion detection range.



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.



Lorex App will automatically send you a notification telling you that there is someone at the door.

Answer with Alexa

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.

Lorex Fusion Ecosystem

Build your security the way you want with the Lorex

Fusion Collection

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

doorbell wedges

Customize your 2K Video Doorbell installation to fit your needs with the two included mounting bracket wedges.


Doorbell Comparison Chart


1080p Wired Video Doorbell


2K Wired Video Doorbell


2K Battery Video Doorbell


4K Wired Video Doorbell

Resolution 1080p / 2MP (1920 × 1080) 2K / 4MP (2560 × 1920) 2K / 4MP (2560 × 1920) 4K / 8MP (2160 × 3840)
Aspect Ratio 16:9 4:3 4:3 9:16
Dark Grey
White, Black
White, Black
White, Black
Detection Person Person Person Person, 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 Yes (chime kit included) Not Included Yes (chime kit included)
Lorex Compatibility Fusion,
ACCHM2 Wi-Fi Chimebox
Lorex Smart Home Security Center,
ACCHM2 Wi-Fi Chimebox
ACCHM2 Wi-Fi Chimebox
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.


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?

B451AJ wall mount dimensions

Dimensions (WxDxH): 5.1" x 1.8" (130mm x 45mm)
Weight: 1.17lbs / 0.53kg

Package Contents:

2K Video Doorbell

Pre-inserted microSD Card

USB Cable

Electrical Wiring

Mounting Kit

Quick Start Guide

15° Horizontal Bracket

5° Vertical Bracket

  1. Impressive 2K Resolution for clear video quality.
  2. See more with the doorbell's 4:3 aspect ratio and 164° diagonal field-of-view.
  3. Get the best picture always with HDR imaging.
  4. Use pre-recorded messages or 2-way talk1 to greet visitors.
  5. Motion-activated LED warning light can be manually enabled or customized to only be triggered when a person detected.
  6. Deter unwanted guests with the remote-activated siren.
  7. Be aware of activity around your doorstep with built-in Person Detection feature.
  8. Receive notifications from the Lorex App™ app when motion is detection2.
  9. Local microSD storage, expandable up to 256GB.
  10. Adjust the viewing angle of your Video Doorbell with the included set of mounting bracket wedges.
  11. Pair with additional wired and wireless Fusion products to enhance your Lorex security experience.
  12. Be notified when someone rings the doorbell, as well as answer it without using your phone with Amazon Alexa™.
  13. Compatible with existing doorbell wiring (16V-24V) and traditional mechanical and electronic digital chimes.3

Product Support

Reviews and Q&A

You may also like

Recently viewed