LED4000UL-24V Mass Notification Sign

General Description

Delivering the right message – to the right people at the right time, is paramount to life safety. From catastrophic natural disasters to terror threats, places like schools, college campuses, malls and industrial facilities face multi-layered emergency communications needs.

The LED4000UL-24V signs provide critical alerts and programmed messages automatically via highly visible, full color LED signage as soon as an emergency event is triggered, thus ensuring that all students, faculty or employees are aware of the crisis and know how to proceed to safety.

The LED4000UL-24V are capable of displaying one line of 4″ text or two lines of 2″ text as your facility needs require.

Standard Features

  • Conformal-coated electronics allows sign to be used in Non-environmentally controlled areas
  • Character size: 2.1″ – 2 lines each and 4.8″ on a single line
  • One year USA factory warranty
  • Stores & displays over 80 messages
  • Flexibility of 1 or 2 line messages
  • Designed for RS-485 data network
  • Designed to be powered from 24vdc
  • On board terminals for data & power
  • Full RGB for 64 brilliant colors
  • Compatible with our MNS controller
  • Mounts easily on wall or ceiling


  • The sign is designed for surface mounting. A low profile wall mount is provided with mounting holes on 16″ center. Use 1/2” all-thread for ceiling mount.
  • Use flex conduit for wiring connections.
  • Terminal blocks are provided for your connections, located on the back of the sign, under a cover plate Mounting bracket allows sign to be tilted as needed for easy readability.


  • The sign is designed to be operated at 24vdc.  Communication with controller is by connection to a dedicated RS-485 data network.
  • The messages are created and modified as needed by connection to a laptop by a standard USB cable and our software

Other models and features

The LED4000ul24vdc is the only model in this series designed for 24vdc operation.

There are larger models available. These require 120 vac power input. They are designed for standard interior use.  Optional NEMA enclosures are available for special needs.  Please contact the factory for more information on these signs, including signs designed for full outdoor use.

Case Dimensions (With power supply): 25” x 3.1” x 7.2” (L x D x H)
Approximate Weight: 12.5 lbs
Display Dimensions: 25” x 4.8” (L x H)
Display Array: 120 x 16 pixels
Characters Displayed per line (Minimum)
One-Line: 4.8″ / 13
Two-Line: 2.1″ / 20
Display Memory: 28,000

Pixel Size (Diameter): 0.2″ (.05 cm).
Pixel (LED) Color: Each dot can be red, green, or amber.
(4120R and 4240R are red only)
Center-to-Center Pixel Spacing (Pitch): 0.3″ (0.8 cm)
Character Sizes: (1-line format): 4.8″ (12.2 cm) – (2-line format): 2.1″ (4.3 cm)
Character Set: International Character Set:
Block (sans), decorative (serif), upper/lower case, slim, wide, double wide
Memory Retention: One month typical.
Message Capacity: 81 different messages can be stored.
Message Operating Modes: – 25 consisting of: Automode ™
Hold, Roll (6 directions), Rotate, Sparkle-On, Twinkle, Interlock, Wipe
(six directions) Spray-On, Slide Across, Starburst, Switch, Flash, Snow, Scroll
– Continuous message entry w/ automatic centering in any mode
– User programmable logos and graphics
– Five variable speed controls
Built-In Animations: Cherry Bomb, Don’t Drink and Drive, Fireworks,
Slot Machine, No Smoking, Running Animal, Moving Auto.

Real-Time Clock: Date and time, 12 or 24 hour format.
Maintains accurate time without power for up to 30 days typical.
Serial Computer Interface: RS232 and RS485 for multi-drop networking.
Power:  24 vdc LED4000ul24v model ONLY.
Other Models:  100-132 VAC, 60 Hz. Or. 200-252 VAC, 50 Hz Autoranging input. Power & serial are field-wired, no line cord.
Keyboard: Handheld, Eurostyle, IR remote.
Case Material: Extruded aluminum
Limited Warranty: One-year parts and labor, factory servicing
Agency Approvals: Listed to ANSI/UL 1950-Third Edition (US), CAN/CSA-22.2 No.950-M89 (Canada)
Complies with EN 60950: 1992 (Europe) and AS/NZS 3260-1993 (Australia) – FCC Part 15 Class A
Operating Temperature: 32° to 140°F, 0° to 60°C
Humidity Range: 0% to 95% non-condensing
Mounting: Hardware for ceiling, wall, or stack mounting methods