74,419.00  74,000.00 Inclusive of all taxes


  • Brightness of 4100 Lumens
  • XGA (1024 x 768) Native Resolution
  • 1.48 to 1.78:1 Throw Ratio
  • HDMI, Composite, & 2 x VGA Video Inputs
  • VGA Output for Loop-Through
  • Analog Audio Input and Output
  • Built-In 10-Watt Speaker
  • Ethernet and RS-232 Controllable
  • RGB Signal Cable and IR Remote Included
SKU: Panasonic PT-LB423U Projector Category:


Enjoy bright images in many everyday settings with the Panasonic PT-LB423U Projector. Its 4100 lumens of brightness and 16,000:1 dynamic contrast ratio will work together to overcome light in moderately bright rooms and provide detail in dark areas of the image. It sports a 1024 x 768 XGA native resolution for viewing detailed video, pictures, or data. The projector’s 1.48 to 1.78:1 throw ratio offers a wide range of throw distances for focused images.

The PT-LB423U features HDMI, RCA composite video, and two VGA inputs to connect to nearly any device. Its analog audio input and output will allow you to pass sound through the projector to your sound system of choice. The projector is controllable via the included remote control, Ethernet, or RS-232 with various control software options.

Designed for Brilliant Performance in a Compact Body

4100 Lumens of Brightness and High Dynamic Contrast
With 4100 lumens of brightness and a 16,000:1 dynamic contrast ratio, this projector will produce an easy-to-see image in many lighting conditions.
Bright Images in Artificial Light
Daylight View Lite uses sensor information to enhance the color and brightness according to ambient light levels. This function is conveniently accessed using the included remote control.
Low-Noise Operation Minimizes Distractions
With an operating noise as low as 28 dB in Eco2 Mode, distractions due to a loud internal fan are reduced.
Low Maintenance Helps Reduce TCO
Select a lamp power mode to suit your presentation style and efficiency requirements to achieve high performance at a lower cost. Lamp and filter replacement timing is the same in any mode, helping to further streamline maintenance procedures.

Setup and Management Ease

Corner Keystone Correction for Angled Projection
If on-site conditions require off-center projection, simply designate four screen corners, and Horizontal and Vertical Corner Keystone Correction performs the necessary adjustments to minimize distortion in your image.
Curved Screen Correction
Curved Screen Correction is designed to easily correct barrel and pincushion distortions when projecting onto a curved surface.
1.2x Zoom Adds Versatility
The PT-LB423U has a 1.2x zoom lens to support a variety of throw distances. This is useful when presenting in rooms of different sizes.
Multi-Projector Monitoring Capability
In fixed installations, the Multi Monitoring and Control Software helps make management of multiple projectors easy from a single computer. The integrated wired LAN port supports the PJLink protocol, while the serial port is RS-232C compatible for remote control.
Designed for Simple Lamp and Filter Replacement
The lamp and filter are accessed via panels on the top and side of the projector, expediting periodic maintenance, even with the projector attached to a ceiling-mount bracket.

Practical Features Help Simplify Daily Usage

Memory Viewer Function
Insert a USB memory device into the USB port and start projecting content without connecting a computer.
USB Display Function Projects Media over a USB Cable
Transmission of A/V content via a Windows computer to the projector is supported over a USB cable with the USB Display Mode.
HDMI and VGA Inputs
Transmit Full HD video using the HDMI input, or view computer graphics through either of the two VGA inputs. A VGA output is also onboard.
Project Wirelessly with an Optional Module
Project media wirelessly from a computer using Presenter Light or a compatible third-party application for iOS and Android devices. Just connect the optional ET-WML100 Wireless Module to the projector’s USB input.
Presenter Light Ver.1.0 for Windows Computers
  • Supports images, video, and documents such as PDF and PowerPoint
  • Mirrors the computer screen through the projector
  • Project media from up to four Windows computers simultaneously in Split Screen Mode
Image Display
Display System 3-Chip 0.63″ / 16 mm LCD
Native Resolution 1024 x 768 (XGA)
Supported Resolutions Up to: WUXGA – 1920 x 1200
Supported Formats Not specified by manufacturer
Format NTSC 4.43
PAL 60, M, N
Pixels 2,359,296
Brightness Normal Mode: 4100 Lumens
Projection Angle Not specified by manufacturer
Uniformity 80%
Offset Not specified by manufacturer
Aspect Ratio Native: 4:3
Contrast Ratio Not specified by manufacturer
Dynamic Contrast Ratio 16000:1
DLP Link 3D Not specified by manufacturer
Supported 3D Formats Not specified by manufacturer
Color Range Not specified by manufacturer
Scan Horizontal: 15 – 91 kHz
Vertical: 24 – 85 Hz
Focus Manual
Lens F 1.6 – 1.76 (f = 19.16 – 23.02 mm)
Lens Shift Not specified by manufacturer
Zoom Manual: 1.2x
Throw Distance 2.9 – 35.9′ / 0.9 – 10.9 m
Throw Ratio 1.48 – 1.78:1
Projection Size 30 – 300″ / 76.20 – 762.00 cm
Keystone Correction Auto: Vertical: ± 30°
Manual: Vertical: ± 30°
Manual: Horizontal: ± 15°
Picture-in-Picture Not specified by manufacturer
Ceiling Mountable Yes
Rear Screen Projection Yes
Projection Tilt Option Not specified by manufacturer
Built-In Speaker Yes, 10 W (Mono)
Internal Memory Not specified by manufacturer
Closed Captioning Not specified by manufacturer
Picture Modes Blackboard
Input/Output Connectors
Inputs/Outputs 1x HDMI with MHL Support Audio/Video (Input)
1x USB Audio/Video (Input)
2x 15-pin VGA Video (Input)
1x RCA Composite Video (Input)
1x RCA Stereo (L/R) Audio (Input)
1x 1/8″ (3.5 mm) Mini Audio (Input)
1x 15-pin VGA Video (Output)
1x 1/8″ (3.5 mm) Mini Audio (Output)
1x USB Type-B Female (Input)
1x Ethernet LAN (Input)
1x RS-232C Control (Input)
Wireless LAN None
Sync Compatibility Not specified by manufacturer
Lamp (Bulb) Not specified by manufacturer
Replacement Lamp ET-LAL500
Light Source Not specified by manufacturer
Color Temperature Not specified by manufacturer
Watts Normal Mode: 230 W
Life Normal Mode: 5000 Hours
Eco Mode: 6000 Hours
Eco+ Mode: 10000 Hours
Fan Noise Normal Mode: 37 dB
Eco Mode: 33 dB
Whisper Mode: 28 dB
Maximum Pixel Clock 162 MHz
Remote Control Yes
Security Security Bar
Menu Languages Not specified by manufacturer
Power Requirements 100-240 VAC, 50/60 Hz
Battery None
Input Current Not specified by manufacturer
DC Output Not specified by manufacturer
Heat Dissipation Not specified by manufacturer
Power Consumption Normal Mode: 300 W
Standby Mode: 6 W
Standby Mode (Eco): 0.5 W
Altitude 0 – 9842′ (0 – 3000 m)
Temperature Operating
41 to 104°F (5 to 40°C)
Humidity: 20 – 80%
Dimensions (WxHxD) 13.2 x 3.8 x 9.9″ / 335.0 x 96.0 x 252.0 mm
Weight 6.4 lb / 2.90 kg Approximately