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Viking Electronics PI-1A Paging interface

Universal Telecom Paging
Condition: New

Availability: In stock




Viking’s Telecom Paging Interface allows you to provide paging from nearly any phone system instead of from a microphone. You can also provide background music and electronic night bell over the audio system.

The PI-1A features a built-in voice activated (VOX) or AC ring activated relay which provides D.P.D.T. contacts for muting background music during paging or to provide an electronic night bell. These contacts are necessary when interfacing with systems such as Panasonic, South Western Bell, Intertel, etc., which do not provide a paging contact closure.

In the event a paging port is not available, the PI-1A can provide talk battery to allow connection of the public address system to an unused line/trunk input on the phone system.

The electronic night bell feature is activated by a standard ringing analog PABX/KSU station circuit or by a common audible contact closure provided by an electronic key system. The ring pitch and volume are adjustable allowing you to differentiate between multiple ringing lines.


  • Integrate your public address system with nearly any phone system
  • Cut out background music during paging
  • Electronic night bell from ringing line or contact closure


  • Floating 600 ohm output
  • Selectable 22V DC talk battery for interfacing with unused phone system line input/trunk ports
  • Paging port interface
  • Ringing analog line input for night bell
  • Contact closure input for night bell
  • DPDT normally open and normally closed VOX activated contacts for cutting out background music
  • Adjustable VOX contact time-out
  • Adjustable VOX trigger sensitivity
  • Adjustable ring volume
  • Adjustable ring pitch


  • Power: 120V AC/12V DC 500mA, UL listed adapter provided
  • Dimensions: 111mm x 76mm x 36mm (4.38” x 2.97” x 1.38”)
  • Shipping Weight: .48 kg (1.06 lbs)
  • Environmental: 0°C to 32°C (32°F to 90°F) with 5% to 95% non-condensing humidity
  • Relay Contacts: 30V DC@1A, 110V DC@0.3A, 125V AC @0.5
  • Maximum Ring Output: 490mV AC RMS no load, 150mV AC RMS@600 ohms
  • VOX Minimum Audio Signal to Activate Relay: 30mV AC RMS@1K Hz
  • Talk Battery: 22V DC

Additional Info

Additional Info

Model PI-1A
Manufacturer Viking Electronics
Condition New
Color No
Downloads Datasheet
Video No



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