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Setup Diagram

Power Adapter

Power

Power

Camera

Extension Cable

BNC

Video Input (supports audio)

Before installing the camera:

 

Decide whether to run the cables through the wall / 
ceiling (drilling required) or along the wall / ceiling.

NOTE: 

 If you run the cable along the wall / ceiling, it 

needs to go through cable notches in the camera base 
and cover. This will keep the camera base flush to the surface when mounted. Use pliers to 
break off the perforated metal tab on the camera cover, and then align the cable notch in 
the camera cover with the cable notch in the camera base. 

To install the camera:

1.  To separate the camera cover from the camera base, loosen the screws 

located on either side of the camera cover using the included Allen key.

2.  Use the included mounting template to mark holes for the mounting 

screws.

3.  Drill the holes and then feed the cable through the mounting surface or 

cable notch. 

NOTE: 

Insert the included drywall anchors if installing the camera in 

drywall.

4.  Connect cables as shown in the section “Connecting the Camera”.
5.  Mount the camera base to the surface using the provided mounting screws. 

Make sure all screws are fastened tightly.

Installing the Camera

Cable Extension Options

Extend the cable run for your camera depending on the cable type used. 

Additional extension cables sold separately. See table below:

Option

Cable Type

Max Cable Run 

Distance

1

Lorex model MCBL-60BNCU / MCBL-60BNCU2 

BNC Cable (included with camera)

60ft / 18m

2

‘RG59’ or ‘Coax’ or ‘Coaxial BNC’ Siamese (Video 

and Power)

300ft / 92m

3

‘RG59’ or ‘Coax’ or ‘Coaxial BNC’ (Video Only)

2

800ft / 242m

Notes:

1.  The extension cable must be a single stretch of cable between the DVR and camera. You 

cannot connect multiple extension cables to each other.

2.  For cable runs above 300ft / 92m (option 3), you must connect the power adapter directly 

to the camera, rather than at the end of the extension cable.

3.  Indicators that your cable run may be too long:

•  Video is permanently black & white (even during day time)

•  Video is unclear, soft, or distorted

4.  For more information on extension cables, visit  

www.lorextechnology.com.

Problem

Solution

No picture / signal

• Ensure the camera is connected to an MPX Series DVR. 

Camera is not compatible with other DVR models. Visit 

www.lorextechnology.com

 for compatibility information.

• Ensure your DVR is properly connected to your TV / 

Monitor.

• Ensure connections are properly connected.

• Ensure the camera power supply is plugged in.

Picture is too bright

• Ensure your camera isn’t pointed directly at a source of 

light (e.g. sun or spot light).

• Move your camera to a different location.

Picture is too dark

• Check the brightness and contrast settings of the DVR 

or monitor.

Night vision is not working

• The night vision activates when light levels drop. The 

area may have too much light.

Picture is not clear

• Check the camera lens for dirt, dust, spider webs. Clean 

the lens with a soft, clean cloth.

• Make sure that the cable run is within the limitations 

specified in the section ‘Cable Extension Options’.

Bright spot in video when 

viewing camera at night

• Night vision reflects when pointing a camera at a 

window. Move the camera to a different location.

No audio

• Ensure DVR volume is turned on / turned up

• Ensure audio function on camera is turned on (see 

instructions in section ‘Disabling Camera Audio’)

• Ensure audio is turned up on viewing device (Tablet, 

Phone, and so on.)

Troubleshooting

To Camera:

To DVR:

Male Power

BNC

1. Connect the BNC and power 

connectors to the camera.

Female Power

2. Connect the BNC connector to the 

video input of your DVR. 

3. Connect the power connector to the  

individual power adapter.

Connecting the Camera

01

01

01

Cable Notch

6.  Use a Philips head screwdriver (not included) to loosen the lens module 

adjustment screw. Do not loosen all the way.

7.  Adjust the angle of the camera as needed. 

 
 
 
 
 
 
 
 

8.  Tighten the adjustment screw when finished.
9.  Cover the camera base with the camera cover. 
10.  Tighten the screws on either side of the camera cover.

ATTENTION

 - Test each camera prior to selecting a permanent mounting location by 

temporarily connecting the camera(s) and cables to the DVR.

A) Turn the lens holder up to 45°. 

B) Tilt the lens module up to 90°. 

C) Rotate the lens module 360°.

ATTENTION

 - 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.

MPX DVR

LEV2750A_SERIES_TRIFOLDQSG_EN_R2

Camera Base

Lens Holder

Lens Module

A

B

C

01

01

01

Mounting Surface

Mounting Template

Drywall Anchors

Mounting Screws

Camera Cover

Camera Mount Screw

Disabling Camera Audio

Audio is 

enabled

 by default. To disable camera audio through a MPX recorder:

1. 

In Live View, double-click the camera channel to open in full-screen. 

2. 

Right-click and then click 

PAN/TILT/ZOOM

. Enter the system user name 

and password if prompted. The PTZ menu opens. 

NOTE

: If prompted, set the control mode and protocol for the channel that 

the camera is connected to in the 

PAN/TILT/ZOOM

 setting page.

3. 

Click the arrow in the PTZ control window to show advanced controls.

4. 

Click 

 . In 

Menu Operation

, click 

Enter

. The OSD menu appears over 

the camera image.

5. 

Select the 

Advanced 

menu using the on-screen controls.

6. 

Select the 

Audio Mode

 option and choose 

OFF

.

7. 

Click 

Enter

NOTE:

 

These instructions are based on current MPX DVR interface. If you 

are not able to access your DVR’s OSD menu by following these steps, 

please use the instructions in your DVR manual instead.

WARNING

 - 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.

Camera

Adjustment Screw

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