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Build amazing entertainment & digital signage displays
Ideal for message boards, video conferencing, classroom presentations, retail kiosks & gaming

Optional CAT5 Receiver
Video signal through CAT5
Dual Ambient Light Sensors
Adjusts monitor brightness based on ambient light
Power Save
Increased protection against image retention and image persistence
Energy Star Compliant
Power savings for energy efficient installations

Widescreen LCD, Full HD 1080P
The MDT421S High Definition widescreen LCD monitor brings full HD 1080P to our line in a bright 42″ digital display with native 1920×1080 resolution. Use this display monitor to build amazing entertainment and digital signage displays. These monitors are also ideal for message boards, video conferencing, classroom presentations, retail kiosks, or gaming displays, or to enhance your facilities with welcome messages, company promotions, or human resources information.

Features Designed for Your Application
The MDT421S monitor answers your need for digital signage, message boards, video conferencing, retail kiosks, or broadcast displays to enhance your facilities with everything from advertising to welcome messages to vital, up-to-the-minute news and information. And versatility is engineered into every one: Inputs range from DVI-D, D-Sub 15 and HDMI. The MDT421S features a built-in CAT5 receiver and an accompanying transmitter box can be purchased separately as an optional accessory.

Automatically Adjusts Its Brightness
The MDT421S LCD display monitor also features both front and rear ambient light sensors for the ultimate in installation flexibility. The monitor automatically adjusts its brightness based on the ambient light ensuring your message is always clear and vibrant. MEMOS: We Back Your Widescreen LCD Monitor Mitsubishi Express Monitor Official Service (MEMOS) provides a dedicated 24-hour, 7-days a week MEMOS Hot Line – (888) 307-0309 - connects you to dedicated support staff
Features & Specifications
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Optional CAT5 Receiver Video signal through CAT5 Dual Ambient Light Sensors Adjusts monitor brightness based on ambient light to keep display from being washed out Power Save Increased protection against image retention and image persistence Picture-in-Picture Show two active input displays simultaneously VESA Compliant Allows for VESA standard mounting arms or mounts. |
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Contrast & Backlight
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Size, Weight, Power
- Viewable Size: (W x H x D)
- 36.6" x 20.6"
- Dimensions: (W x H x D)
- 38" x 22" x 4.6"
- Dimensions with Stand: (W x H x D)
- N/A" x N/A" x N/A"
- Weight:
- 52 lbs.
- VESA Standard: (Mounting Interface)
- 12 Holes (100mm)
Operation
- PC/MAC Compatibility:
- Yes
- Response Time:
- 9.0 ms (Grey to Grey)
- Power Consumption:
- 232W
- Power Requirements:
- N/AV
- Scanning Frequency:
- [H] 31.5-91.1 kHz
[V] 58.0-85.0 Hz
Interface
- Computer/Video Input Support:
- Mini D-Sub 15 pin
BNC (R,G,B,H,V)
HDMI
DVI-D - NTSC, PAL, SECAM: Yes
- 12V Trigger: N/A
- Computer Monitor Loop-Out: Yes
- RS-232 Communication Support: Yes
- Audio Speaker: Optional
- USB Mouse Support: N/A
Warranty & Service: 3-years parts and labor, toll-free 24x7 technical support, available Express Replacement Assistance, repairs and service (MEMOS)
Proof of purchase or dated invoice with model and serial number information will be required for all service transactions to be initiated
Support
Resources
Documentation
CAD Files
Control Codes
Monitor Images
Warranty
The Warranty program provides a high standard of service excellence for Mitsubishi LCD TV monitors that function as both a television, as well as a display monitor. Users of these TV monitors are entitled to a comprehensive set of support services:
1-year parts and labor warranty
Onsite warranty repairs and service availability
If a TV monitor fails within the first 30 days of delivery, regular DOA procedures will apply and replacement units may be sent instead of onsite service
All terms and conditions of Mitsubishi LCD TV Monitor Warranty still apply, please review the warranty statement for more details
Toll-free 24x7 technical support access
Proof of purchase or dated invoice with model and serial number information will be required for all service transactions to be initiated
Accessories
![]() | Optional Speakers
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![]() | Digital Signage Player with WiFi, RS-232C and A/V Input
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![]() | Digital Signage Player
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![]() | Multi-Purpose Tilt Mount
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![]() | Multi-Purpose Fix Mount
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Monitor Support
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