AVT1425 C

A simple but effective generator of alarm signals. Built on the UM3561 integrated circuit. The generated sounds are stored in the built-in ROM of organization of 256 8-bit words. The choice of the type of signal generated is possible thanks to the two-input selector. There is a very simple single-transistor acoustic signal amplifier on the board. Thanks to this, the sound can be emitted by a small loudspeaker.
A properly assembled system does not require any commissioning activities.

The device is especially recommended for people who want to achieve eye-catching alarm signals for modelers

Selected parameters:

• four different sound effects
• sound selection with dipswitch
• the ability to adjust the playback tempo
• sound source - a miniature speaker
• power supply - 9 Vdc (battery)
• system assembled and running
  Detailed description in EP 4/06