The PK-543A Power Pack Intercom Amplifier is a self contained unit not requiring an external amplifier. The PK-543A is designed for use with most 3-4-5 wire apartment stations and provides amplification control and power circuits needed to operate a complete apartment intercom system. Voice volume control and tone volume control are easily adjustable through the screwdriver slot on the front panel.
Additional functions include multi-entrance operation with the PK-502B, AC or DC door operation selectable by terminal connection with selectable delayed action door release set at the dip switch, post office door lock release and a tone signal to call remote stations. A steady or warble tone can be used to identify calling from the main entrance panel and a call button located at the suite entrance.
Size: 5 1/2"H, 3"1/8W, 2"D.
Construction: Rugged ABS Plastic Casing
Amplification: Integrated circuit amplifier including amplifier with frequency response adjusted for best voice articulation
Call Tone: Integrated circuit oscillator
Door Release: AC or DC operation with selectable timing
P.O. Release: P.O door lock release
Connections: Polarized plug in type.
Power Req: 16 VAC, 10V AC
Mounting: Surface, or mount to the rear of specifically designed apartment entrance speaker panels.
Replaces: LEE DAN or Tektone models: PK-543, PK-104B, PK-103B, PK-103A, PK-101A. Also replaces many other brands and models (call for info).