SLP-4 - Single Line Paging Controller | Viking Electronics

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Add Whole-House Paging, Loud Ringing, Phone-to-Phone Intercom and CD Quality Chimes or Messages to Your Multi-Room Audio System

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Product Details

The SLP-4 Single Line Paging controller will allow you to page family members or co-workers from any phone in your home or small office. The pages can be heard over the same paging speakers that are installed for multi-zone music distribution.

The SLP-4 provides inputs for 4 lighted doorbell switches. The inputs select 4 different CD quality sounds from a library of eight factory recordings including Westminster bells, chimes, alert tones, barking dogs, etc. Alternatively, users may record their own CD quality sounds into the SLP-4 from their PC’s USB port. When the doorbell switch is pressed, background music is muted while the appropriate sound is heard over the paging system speakers.

The SLP-4 connects in series with a single existing phone line. The unit has a built-in 2 watt amplifier, pre-amp output, music on hold input, intercom features, and selectable loud ringing.


  • Whole house / small business paging from existing phones
  • Add paging, intercom, and music on hold features for small businesses
  • Loud ringing / night bell
  • Compatible with C-200, C-250, C-1000B and C-2000B
  • Museum or Info Center, 4 button audio server


  • Factory loaded CD quality Westminster door chimes
  • Stereo line level pre-amp inputs/outputs for whole house audio systems
  • Built-in two-watt mono paging amplifier with gain control
  • Phone to phone intercom
  • Place callers on music-on-hold when paging
  • Can provide background music from an external source
  • Background music mute (automatic during paging or touch tone selectable while you are on a call)
  • Selectable loud ringing (electronic warble over speakers)
  • Four doorbell switch inputs (lighted or non-lighted) for activating door chimes
  • Other door sounds: ding-dong, knocking, tones, barking
  • USB port for loading custom WAV file chime tones, sounds, or music
  • 6 minutes of recorded audio storage
  • Switch selectable on-hold alarm tones
  • Page trigger output (12V signal for enabling paging source input on multi-source amps)
  • Individual Chime, Page, and Ringing volume controls
  • Bypass code – ignores all touch tones on next off-hook allowing you to steer through auto attendants, etc.
  • Page from multiple lines by connecting multiple units
  • Comes complete with power supply


  • Power: 120V AC/13.8V AC 1.25A, UL listed adapter provided
  • Dimensions: 8.25” x 6.25” x 1.75” (210mm x 159mm x 45mm)
  • Shipping Weight: 3.2 lbs (1.5 kg)
  • Environmental: 32°F to 90°F (0°C to 32°C) with 5% to 95% non-condensing humidity
  • Paging Amplifier Output: 2 Watts – powers up to (3) 8 Ohm (16) 45 Ohm speakers
  • Sound Pressure: 100 dB @ 1 meter (loud electronic warble from 25AE paging horn)
  • REN: 0.5A
  • Maximum Speaker Output Wire Run: 300 ft (91m), 18 AWG
  • Maximum Doorbell Switch Wire Run: 1000 ft (305m), 24 AWG
  • Maximum Load on Page Trigger Output: 1K Ohm
  • Talk Battery: 36V DC
  • WAV File Resolution: 16 bit or 8 bit
  • WAV File Sampling Rate: 44.1K, 22K, or 11K
  • Connections: 24 screw terminal block positions, (4) RCA jacks, (1) Type B USB jack, (1) 3.5mm (1/8”) audio jack


To download a tone for use on your product, right click on the Download icon and select "Save Link As" (instructions may vary slightly per web browser)

Tone Description Preview Download
Westminster 4 Westminster 4 Chime
Ding Dong Ding Dong
Triangle 2 Triangle 2
Goblet Chime 1 Goblet Chime
Wind Chime Notes Wind Chime Notes
Door Knock Door Knock
Alert Tone 2 Alert Tone 2
Dogs Barking Dogs Barking