Overview Up for sale is an authentic, bench-tested Pacific Electro Dynamics (PED) PN 495-1 Aircraft Electronic Chime Unit. Manufactured in Bellevue, Washington right next to Boeing's assembly plants, this is the genuine 28VDC aural chime generator used across classic Boeing commercial airliners to generate the iconic "Fasten Seat Belt" / "No Smoking" single chime (HI or LO) and the two-tone crew call / attendant "Ding-Dong" chime (HI-LO).

This unit includes a built-in bottom resonator/speaker as well as a line-level audio output terminal, making it ideal for an authentic Boeing home flight simulator cockpit, aviation collection, or an unmistakable 28V shop/hangar doorbell.

Identification & Markings

• Manufacturer: Pacific Electro Dynamics, Inc. (Bellevue, WA)

• Part Number: 495-1

• Serial Number: 360

• Code Ident (CAGE): 16340

• Mod Status: MOD INC & MOD A punched

• Inspection Stamps: 1980 ink date stamps on faceplate (JUN 23 80 / JAN 17 80) plus an intact Astronics Advanced Electronic Systems (Redmond, WA) inspection seal dated FEB 17 2011.

Terminal Barrier Strip Pinout (Front Label)

1. OUTPUT: Audio signal output (for external PA / interphone amplifier)

2. GND: Audio Ground

3. GND: Power / Chassis Ground

4. +28V: 28 VDC Power Input

5. HI-LO: Trigger for iconic two-tone "Ding-Dong" attendant chime

6. LO: Trigger for low-pitch single chime

7. HI: Trigger for high-pitch single chime

Condition & Testing

• Functional: Bench-tested with 28VDC power; produces crisp, loud, iconic Boeing chime tones.

• Cosmetic: Good used condition with normal minor paint wear on edges. All four mounting feet with integrated floating nutplates (rivnuts) and all barrier strip terminal screws are clean and intact.

• Note: Sold strictly for flight simulator, educational, or ground/novelty use. No FAA Form 8130-3 airworthiness paperwork is included.