Key Features
- 2K Video Resolution (HDR)
- 2-Way Talk
- Color Night Vision
- IP65 weatherproof Rated
- -20°C to 50°C Operating Temperature
- Compatible with the Lorex Classic App
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
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.
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.
Detect
Receive a Lorex Classic 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
The Lorex Classic App will automatically send you a notification telling you that there is someone at the door.
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 Classic 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.
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 FilterIndoor/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 / 0.53kgPackage 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
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, BlackWhite, BlackWhite, BlackDetection 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 ChimeboxFusion,
Lorex Smart Home Security Center,
ACCHM2 Wi-Fi ChimeboxFusion,
ACCHM2 Wi-Fi ChimeboxFusion,
ACCHM2 Wi-Fi ChimeboxThird-Party Compatibility Alexa, Google Assistant Google Assistant Alexa, Google Assistant Alexa, Google Assistant Communication (Audio) 2-Way Talk,
Quick & Custom Response2-Way Talk,
Quick & Custom Response2-Way Talk,
Quick & Custom Response2-Way Talk,
Quick & Custom ResponseNight 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.