B451AJD-EG - Doorbells Lorex - Free user manual and instructions

Product Type	Connected Video Doorbell
Brand	Lorex
Model	B451AJD-EG
Video Resolution	2K QHD
Connectivity	Wi-Fi 2.4 GHz / 5 GHz, Bluetooth (setup)
Viewing Angle	Adjustable 15° horizontal, adjustable 5° vertical
Power Supply	16-24 V AC (existing or supplied transformer)
Local Storage	Pre-installed microSD card (up to 256 GB not included)
Audio	Microphone and speaker, two-way communication
Night Vision	Yes, with mechanical IR filter
Motion Detection	Yes, customizable zones and adjustable sensitivity
Status Indicator	Multi-color LED (customizable)
Smart Features	Person detection, quick responses, nightlight, user sharing
Mobile App	Lorex Home (iOS and Android)
Chime Compatibility	Mechanical or electronic (chime kit included)
Mounting	Wall bracket with optional angle mounts (screws and anchors provided)
Dimensions (approx.)	12 x 4 x 3 cm
Weight (approx.)	200 g
Protection Class	Sheltered outdoor (do not immerse)
Operating Temperature	-20 °C to 50 °C
Package Contents	Doorbell, mounting bracket, 15° and 5° angle mounts, USB cable, chime kit, cables, mounting accessories, microSD card
Maintenance	Clean with a damp cloth, no abrasive products
Safety	Cut power before installation, respect voltage 16-24 V AC
Warranty	Visit lorex.com/warranty

Frequently Asked Questions - B451AJD-EG Lorex

How to reduce false notifications?

In the Lorex Home app, go to Motion Detection Settings to draw exclusion zones and adjust sensitivity. You can also set a notification schedule in Device Settings > Notifications.

How to turn on the nightlight at night?

Enable Nightlight Mode in Device Settings > Motion Detection Settings > Light Settings. You can schedule operating hours via Edit Schedule.

Can I record a custom message for visitors?

Yes, go to Device Settings > Quick Doorbell Responses, tap + to record your message. You can then select it during a call.

What is the Wi-Fi range of the doorbell?

The doorbell connects to Wi-Fi 2.4 GHz or 5 GHz. The range depends on your router, but it is recommended to have a strong signal at the installation location. Avoid metal obstacles.

What to do if the doorbell does not turn on?

Check that the circuit breaker is on and the power supply voltage is 16-24 V AC. You can test with the included USB cable and a 5V 2A adapter (not supplied) to confirm the device works.

How to reset the doorbell to factory settings?

Remove the cover of the microSD slot at the back, insert the provided pin into the RESET hole and hold for 10 seconds. Wait for a restart beep.

Can I use the doorbell with an existing chime?

Yes, the doorbell is compatible with mechanical and electronic chimes. Follow the wiring instructions in the guide, and use the provided chime kit for mechanical models.

How to share access with other users?

In the Lorex Home app, go to Device Settings > Shared Users and add accounts. Each user must have a Lorex Home account.

Is the video recorded continuously?

Recording requires a microSD card (included) and can be configured for motion detection or continuous recording. Recordings can be viewed in the app.

What to do if the chime does not ring after installation?

Check the chime type selected in the app (Device Settings > Chime). Wait 5 minutes for the doorbell to fully power on and ensure the chime kit is correctly installed without contact with moving parts.

USER MANUAL B451AJD-EG Lorex

Thanks for your purchase of the 2K Video Doorbell. Here's how to get started.

Contents

Section 1 Package contents
2 Overview
3 Status indicator
4 Connect to the app
5 Preparation
6 Wiring the chime
7 Secure the mounting bracket(s)
8 Wiring the doorbell
9 Connect the doorbell
10 Lorex Home app overview
11 Troubleshooting
12 Frequently asked questions

1 Package contents

User-supplied tools

Drill

Screwdriver

2 Overview

Front Panel Back Panel

Camera Microphone Status indicator Call button Label Area Micro-USB port Reset hole microSD card slot Power ports Warning / night light Speaker Bottom View

③ Status indicator

Front view of a gray remote control device with a black square button and a green square outline (no text or symbols)

Solid blue

The video doorbell is powering on or the video doorbell is restarting.

Solid red

The video doorbell is resetting to factory default.

Solid green

The video doorbell is operating correctly.

Flashing blue slowly

The video doorbell is ready to connect.

Flashing blue rapidly

The video doorbell has detected motion.

Flashing red

The video doorbell failed to connect to the network.

Flashing green

The talking function on the video doorbell is in use.

Flashing blue, red, and green

A firmware update is in progress.

Spinning red

The video doorbell is connected to the network, but unable to access the internet.

Spinning green

The calling function on the video doorbell is in use.

4 Connect to the app

Connect to the Lorex Home app to access the doorbell's installation videos.

1. If you already have the app, skip this step. Scan the QR code on the right using your mobile device's camera. Install the free Lorex Home app from the App Store™ or Google Play Store™.
2. Tap the Lorex Home icon to launch the app.
3. If you already have an account, skip this step. Tap Sign up, then follow the on screen prompts to create an account. Record your account details below:

Email:

Account Password:

Scan QR code for Lorex Home app

1. Tap on the icon + on the top right of the screen to add a device.
2. Scan the device QR code found in the box or on the back of the doorbell.

Note: If your mobile device cannot scan the QR code, tap Manually enter Device ID.

1. Follow the in-app instructions to complete the installation OR refer to sections 5 through 9 in this Quick Start Guide for a written description of the installation steps.

5 Preparation

Before beginning setup, there are some essential preparations to make.

To prepare for installation:

Step 1

TURN OFF THE POWER RUNNING TO YOUR EXISTING DOORBELL AND CHIME BOX AT THE BREAKER (See Figure 1).

Test that power has been disconnected for both the doorbell and chime box power by pressing the doorbell. There should be no chime sound.

Always be careful when handling electrical wiring. If you're not comfortable doing it yourself, then consult a licensed electrician.

Step 2

Remove your existing doorbell and disconnect wiring (see Figure 2). Make sure to bend the power cables so they do not fall through the hole in the wall.

Figure 1 OFF OFF

Figure 2

Simple curved line drawing with a gray top and two black segments (no text or symbols)

IMPORTANT: 16-24 VAC is required. If your house does not have this voltage, you will need a 16-24 VAC doorbell transformer or you can consult with a licensed electrician.

6 Wiring the chime

You must determine the type of doorbell chime you have in your home: electronic or mechanical. Not sure? If your doorbell chime is a classic *ding-dong* sound, chances are your chime is mechanical. If your doorbell sounds more like a melody, then your chime is electronic. If you are still not sure, remove the cover panel of your chime box - if you find springloaded levers and a physical metal chime, you have a mechanical chime.

For users with a mechanical chime, follow the extra step below to complete the installation.

For mechanical chime owners:

1. Remove the cover panel of your doorbell chime box.
2. Loosen the screws labeled FRONT and TRANS using a Philips head screwdriver. Do not remove the screws, and be sure to detach any connected wiring (see Figure 1).
3. Connect the included chime kit to the green terminal on the end of the included wire harness (see Figure 2).

Figure 2

Diagram of a rectangular block connected to a red wire with three terminal leads (no text or symbols)

Figure 1

PEAT TRANS FRONT

1. Connect the wiring from the chime kit to the FRONT and TRANS connectors in the chime box. Ensure that the existing wiring stays connected as well (see Figure 3).

Note: You may connect either wire to either connector.

1. Mount the chime kit to the inside of your chime box, or along the cover plate of the chime box, using the included double-sided tape (see Figure 4).

IMPORTANT: Use the included double-sided tape to ensure the chime kit and wires are not touching the chimes or any moving components inside the chime box, or the doorbell chime will not sound correctly.

Figure 3

Technical diagram of an electrical circuit with springs and capacitors, no visible text or symbols

Figure 4

e the chime kit the chimes s inside the chime will not Chime kit

7 Secure the mounting bracket(s)

Use the mounting accessories specified below depending on the mounting location.

Step 1: Mark mounting holes

Place the mounting bracket to fit your existing doorbell wiring. Then mark the screw holes according to the mounting bracket.

IMPORTANT: Ensure that the UP arrow on the mounting bracket is always pointing up.

Figure 1

Step 2 (Optional): Attach an angled bracket to the mounting bracket

If you want to change the angle of the doorbell for a better view, attach one of the optional angled brackets to the mounting bracket.

1. Select either the horizontal or vertical bracket according to the direction you want your doorbell to face (see Figures 2&3).
2. To change the direction of the angle, simply flip the horizontal or vertical bracket upside down. Whichever direction you choose, make sure the attached mounting bracket is always facing

Option 1: Horizontal bracket Figure 2 (bottom view)

Close-up of a smartphone rear panel showing the 15° right angle indicator (no other text or symbols)

15° left

Option 2: Vertical bracket Figure 3
5^ down

5^ up

1. Insert the four tabs from the horizontal or vertical bracket into the the mounting bracket as shown in Figure 4. Make sure to insert in the desired direction.

2. Press the mounting bracket down. A *click* sound will indicate that the brackets are locked in.

Notes:

• You can only attach one angled bracket to the mounting bracket.
• If you would like to change the direction of the angled bracket after attaching it to the mounting bracket, gently but firmly pull them apart.

Figure 4

Diagram of a dual-panel device showing internal components with labeled parts and dotted alignment lines

Step 3: Secure the mounting bracket

When installing only the mounting bracket, refer to Figure 5-a. When installing the angled bracket attached to the mounting bracket, refer to Figure 5-b.

1. For wood, drywall or soft surfaces:

Secure the mounting bracket(s) to the mounting surface using a Philips-head screwdriver and the supplied mounting screws.

2. For concrete, stucco or brick:

Use the supplied 15/64" drillbit to drill holes where marked. Use the supplied anchors and screws to secure the mounting bracket(s) to the wall.

Figure 5-a

Notes:

• Ensure that the ↑upw on the mounting bracket is always pointing up.
• The (optional) angled bracket must be attached to the mounting bracket before installation.
• Ensure the power cables from the wall fit comfortably through the hole in the mounting bracket.

Figure 5-b

Diagram of a mobile phone internal structure with screw and cable connections, showing wiring and component labels

⑧ Wiring the doorbell

To wire the doorbell:

1. Loosen the power port screws of the doorbell with a Philips-head screwdriver.

Note: Do not fully remove the power port screws.

1. Loop the power wires underneath the power port screws (see Figure 1).
2. Tighten the power port screws to secure the power wires (see Figure 2).

Diagram of two electrical connectors with pliers, labeled Figure 1 (no text or symbols on components)

Figure 2

Label Area Label Area micro USB RESET micro 3D

To extend short wires (optional):

Figure 3

Diagram of two electrical outlet switches with black and white cables, no text or symbols present

Figure 4

1. If your existing doorbell wiring is too short, remove the power port screws completely, then thread the screws through the supplied extra wires. Use the supplied wire caps to extend your wiring (see Figure 3).
2. To attach the wire cap, align the ends of your existing wiring and extra wires, place the wire cap over the exposed wiring and twist the wire nut clockwise to tighten (see Figure 4). Pull on the wires slightly to make sure that they are properly fastened inside the wire cap.
3. Ensure there is enough space to fit the cable connectors and wire caps into the hole in your wall.

9 Connect the doorbell

To attach the doorbell to the bracket:

1. Push the wiring back into the wall.
2. Insert the two tabs from the mounting bracket into the doorbell (see Figure 1).
3. Press the doorbell downwards. A *click* sound will indicate that it is locked in.

Figure 1

Diagram of a device showing internal components connected to a screen, with no visible text or symbols.

Note - If you need to remove the doorbell from the bracket:

1. Insert the supplied pin into the hole at the bottom of the mounting bracket until the inner buckle is reached (see Figure 2).
2. Then slide the doorbell up and remove it.

Figure 2

Close-up of a white industrial fan or blender with a handle and label (no visible text or symbols)

You may now reconnect power to the doorbell and chime at the breaker (see Figure 3).

Figure 3 ON ON

Wait 5 minutes for the doorbell to fully power on and press the doorbell's button to ensure that the chime is operating correctly. Check section 11 for troubleshooting if needed.

10 Lorex Home app overview

To customize the video doorbell, go to your Lorex Home app and select the doorbell. Tap on the ••• icon on the top right of the screen to access the doorbell's settings.

Person Detection

Tap on Motion Detection Settings to customize person detection. Draw designated areas to alert for person detection and adjust how sensitive the detection level will be.

Activate Status LED on Detection

Tap on Motion Detection Settings > Light Settings to enable Activate Status LED on Detection. The LED color on the doorbell's status indicator can be customized for person detection alert.

Night Light Mode

Tap on Motion Detection Settings > Light Settings to enable Night Light Mode. The LED light below the doorbell will illuminate the front door when it gets dark.

Shared Users

Tap on Shared Users to let family or friends answer live events and view recordings. Any additional users must sign up for a Lorex Home account to be added.

Doorbell Quick Responses

Tap on Doorbell Quick Responses to record or select a pre-recorded voice message. The Lorex video doorbell can speak to a visitor if you're not able to come to the door.

Video Settings

Tap on Video Settings to change HDR (High Dynamic Range) settings and set the video quality. For optimal streaming the video quality is set to 1080p by default.

Camera Live View

Device name Back Front Door-Channel 1 Shared users Settings Date & time Pause Live View Viewing modes Streaming Timeline Fullscreen view Mute/unmute Snapshot 2-Way talk Manual Recording Warning light Siren Privacy mode

Calling screen

For a complete overview of controls available on the Lorex Home app, scan the QR code below using your mobile device's camera.

Listen-in:

Tap to listen-in on a visitor while your audio is muted.

Ignore / end call

Front Door-Channel 1 LOREX Listen-in Quick Responses

— Fullscreen

Quick responses

Answer call

11 Troubleshooting

1. The video doorbell is not turning on.

• Make sure the breaker is turned back on and wait 5 minutes for the doorbell to fully power on.
- Make sure the power source that supplies the video doorbell is 16-24 VAC. Check if the voltage is printed on your doorbell transformer or use a millimeter to test the voltage.
- Connect the video doorbell using the supplied USB power cable. Make sure the USB cable is connected to a 5V 2A USB power adapter (not included). If the video doorbell powers on with the USB cable, then carefully go over the installation setup again.

2. The video doorbell's chime is not working.

• Make sure to select the correct chime box in the app. You can modify these settings at any time in Device Settings > Doorbell Chime.
• Check to make sure that the chime kit is wired correctly.
• Allow for the video doorbell to power on for 5 minutes before testing the chime.

3. How to reset the video doorbell to factory settings.

• Pull back the reset/microSD card slot cover located on the back of the video doorbell.
• Use the supplied pin and insert it into the tiny hole labelled RESET for 10 seconds. Wait for an audible sound to confirm that the video doorbell is restarting.

4. How to insert or remove the microSD card from the video doorbell.

• Pull back the reset/microSD card slot cover located on the back of the video doorbell.
• If inserting, slide the microSD card into the slot (with the label side down) until it *clicks* into place.
• If removing, push down gently on the microSD card. It will pop out and can then be removed.

12 Frequently asked questions

1. How come I am receiving so many notifications?

• The amount of notifications you receive can be adjusted in the Lorex Home app for each setting or mode. For example, you can draw Motion Zones for certain areas that you want your doorbell to ignore while effectively monitoring the area you want and reducing false alert notifications. Adjusting Motion Sensitivity will also help.
• You can even manage notifications in Device Settings > Notifications and set a schedule to receive alerts at specific periods in the day.

2. How do I get the video doorbell's light to stay on at night?

In Device Settings > Motion Detection Settings > Light Settings, enable Night Light Mode. Then select Edit Schedule to set a start time and end time for each given day of the week. Make sure to save your settings.

3. How do I record a custom quick response for the video doorbell?

In Device Settings > Doorbell Quick Responses, tap the + on the top right and record your custom quick response. Tap Next to name and save the recorded message.

4. What's the wireless range of the video doorbell?

The video doorbell can only connect to a 2.4 GHz or 5 GHz Wi-Fi network. Many routers broadcast Wi-Fi networks in both 2.4 GHz and 5 GHz bands. During setup, connect your doorbell to the same Wi-Fi network as your phone.

5. What is the USB cable used for?

The USB cable is used to connect to the app before installation. Make sure that the USB cable is connected to a 5V 2A USB power adapter (not included).

Safety precautions:

• Read this guide carefully and keep it for future reference.
• Follow all instructions for safe use and handling of the product.
• Risk of electrical shock. Disconnect the power at the fuse box before installation.
• Use the product within given temperature, humidity and voltage levels noted in the camera's specifications.
• Do not disassemble the doorbell.
• Try to avoid installing the doorbell pointed directly at the sun or a source of intense light.
• Periodic cleaning may be required. Use a damp cloth only. Do not use any harsh, chemical-based cleaners.

Disclaimers:

- The Lorex video doorbell requires a constant power supply with a voltage between 16V-24V. If your residence does not have this voltage, you will need a 16-24 VAC doorbell transformer or you can consult with a licensed electrician.

- Not intended for submersion in water. Installation in a sheltered location recommended.

- This camera includes an Auto Mechanical IR Cut Filter. When the camera changes between Day/Night viewing modes, an audible clicking noise may be heard from the camera. This clicking is normal, and indicates that the camera filter is working.

- Audio recording without consent is illegal in certain jurisdictions. Lorex Corporation assumes no liability for use of its products that does not conform with local laws.

Copyright © 2021 Lorex Corporation

As our products are subject to continuous improvement, Lorex reserves the right to modify product design, specifications and prices, without notice and without incurring any obligation. E&OE. All rights reserved.

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.

For up-to-date information and support please visit:

help.lorex.com

For more information about Lorex's warranty policy, visit lorex.com/warranty.

B451AJ_QSG_TRILINGUAL_R1

LOREX®

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Simple curved line diagram with two curved ends and a gray top (no text or symbols)

Diagram of a device with a green connector and red wires, labeled Figure 2 (no text or symbols on the diagram itself)

Figure 1

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Technical diagram of an electrical circuit with transformers, capacitors, and insulators (no text or labels)

Figure 4

Illustration of a rectangular electronic device with ventilation slots and a side panel (no text or symbols)

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Diagram showing two views of a device with labeled components and dotted lines indicating alignment or connection points.

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Diagram of a mobile phone internal structure with screw and indicator lights, showing wiring connections and labels like 'UP' and '×'.

Diagram of two electrical connectors with pliers, labeled Figure 1 (no text or symbols on components)

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Diagram of two electrical outlet switches with black cables and circular components (no text or symbols)

Figure 4

Diagram of a device showing internal components connected to a screen, with no visible text or symbols.

Illustration of a white electric shaver with label 'Figure 2' (no other text or symbols)

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Front Door-Channel 1 LOREX Listen-in Quick Responses

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Copyright © 2021 Lorex Corporation

Front view of a mobile phone with a green square button on the side (no text or symbols visible)

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Figura 1 OFF OFF

Figura 2

Simple curved line diagram with two ends and a cloud-like shape at the top (no text or symbols)

Diagram of a rectangular block with a green internal component connected to three red wires, labeled 'Figura 2' (no text or symbols on the diagram itself)

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Technical diagram of an electrical transformer with insulators and wiring (no text or labels)

Figura 4

Illustration of a rectangular electronic device with ventilation slots and a pointer, no text or symbols present.

Diagram of a dual-panel device showing internal components with labeled parts and dotted alignment lines

Diagram of a mobile phone internal structure with screw and indicator lights, showing wiring connections and labels like 'UP' and '×'.

Close-up of electrical plug connectors with no visible text or symbols

Figura 2

Label Area Label Area micro USB RESET micro 50 C

Diagram of two electrical outlet switches with black cables and circular components (no text or symbols)

Figura 4

Diagram of a device showing internal components connected to a screen, with no visible text or symbols.

Close-up of a white industrial blender with a handle and label (no visible text or symbols)

Figura 3 ON ON

Front Door-Channel 1 LOREX Listen-in Quick Responses

Copyright © 2021 Lorex Corporation