3 Tone Siren

This project is a 3 tone siren based on UM3561 IC.

Description

3 Tone Siren project produces Gun Sound, Police Siren and Ambulance Siren effects from a speaker.  This project is built around UM3561 IC driving an LM386 audio amplifier to give that extra punch.

Specifications:

• Supply input 6 VDC @ 200 mA
• Output : Speaker, 8 Ω / 0.5 W
• Two slide switches select and play different tones
• On/Off Side switch for supply input
• Terminal pins for supply input and speaker output
• Power-On LED indicator
• Four mounting holes of 3.2 mm each
• PCB dimensions 42 mm x 64 mm

Schematic

Parts List