Message Waiting Lamp Controller (Model MLC-24)

The MLC-24 will provide message waiting voltage superimposed over up to 24 analog extensions for Key Systems, PABX's and Voice Mail systems that don't provide such voltage.
Add Message Waiting Lights for Voicemail on Any System
With Viking’s MLC-24 you can integrate visual message waiting indication with nearly any phone system...even those phone systems which do not support message lamps. Commands are sent to the controller via C.O. line or analog PABX/KSU station or trunk port. Up to four MLC-24 controllers can be connected to a single line.

The MLC-24 is compatible with virtually any voice messaging system with "out call" or "dispatch" feature. It can also be activated manually from a Touch Tone phone. The lamps can be reset by the voice mail system or from the user’s telephone.

  • Voice mail systems that don't provide message waiting voltage
  • Remote voice mail systems
  • Staff "In - Out" board
  • "Do Not Disturb" lights
  • Each MLC-24 controls up to 24 message waiting lamps
  • Compatible with 90 to 125V message waiting phones
  • Compatible with LED’s or Viking LM-1 or LM-2 retrofit message waiting lamp kit
  • Displays both steady lamp or flash for urgent messages
  • Expandable in multiples of 24 lamps
  • Uses existing C.O. lines or analog PABX/KSU stations
  • Built in diagnostics to aid installer
  • One year warranty
  • Made in the USA
  • Power: 120V AC/12V DC 500 mA, UL listed, adapter provided
  • Dimensions: 8.25mm x 160mm x 44mm (8.25" x 6.25" x 1.75")
  • Shipping Weight: 1.36 kg (3 lbs.)
  • Environmental: 0°C to 32°C (32°F to 90°F) with 5% to 95% non-condensing humidity
  • Connections: (1) RJ21X male, (1) RJ21X female, (1) RJ11 com port