Features:
- Touch Tone control of four zones, expandable to 8 zones
- Switches line level signal to amplifiers or amplified signal to speakers (amplifier(s) not included)
- Balanced audio circuitry for low noise
- Night bell warble with adjustable level from contact closure or ringing analog station
- Input provided for background music
- Separate paging and background music level adjustments
- Background music automatically mutes in paged zone(s) in all but single amplifier mode
- All-call and five group call patterns, selected by touch tones
- Selectable page alert tone with adjustable level
- Interfaces with ringing analog station ports, paging ports and unused phone system trunk ports
- Disconnects on silence, CPC, busy, touch tone "#" or time-out
- Screw terminals for all input/output connections
Applications:
- Multiple zone paging for phone systems with paging ports, unused analog station ports or unused trunk inputs
- Multiple department manufacturing business
- Multi-level warehouse
- Multiple building office complex
The ZPI-4 is a four-zone touch tone controlled paging system capable of switching a line level signal (600 Ohms) to amplifiers, an amplified signal to 70V speakers, or an amplified signal (200 Watts maximum) to 8 Ohm speakers.
The ZPI-4 features balanced audio circuitry throughout for low noise and compatibility with balanced paging system inputs and outputs. There are separate level controls for paging and background music, and background music can be disabled on a per-zone basis. Also provided is a night bell with adjustable volume activated by a dry contact closure or a ringing analog PABX/KSU station.
The ZPI-4 is compatible with ringing analog PABX/KSU station ports (disconnects on silence, CPC, busy, touch tone (#) or timeout) as well as unused trunk inputs, and will interface directly with standard paging ports.
For more information, please see 
User Manual
