SoundBytes Transformer Hum
The SoundBytes Transformer Hum is a simple, fully self-contained sound module that plays a background hum reminiscent of an electrical transformer or substation. Add some ambiance to your layout's electrical infrastructure!
Best played at a low, understated volume.
Features
- Integrated speaker & volume control
- Easy to install and use
- Powered from 5V to 24V
Sound Samples
Transformer Hum
Electrical Connections
The SoundBytes module needs 5-24 volts of clean direct current (DC) power to operate. Connect the white wire to GND to activate the sound. Leave the white wire disconnected when not in use.
Red Wire = 5V to 24V
Black Wire = GND
White Wire = GND to activate
Specifications
1.25"(L) x 1.25"(W) x 1.25"(H)
Documents
The complete gEDA design files are available on GitHub.
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$19.00
- 10 in stock

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News & Application Notes
Is the Substation on Your Layout Just Ho-Hum?
Make it really HUM with the new SoundBytes Transformer Hum module! See it in action at the St. Louis Railroad Prototype Modelers Meet, July 29-30, 2022.