This kit contains the parts and the circuit board to build a sound effect generator. The module can generate 4 different sounds: police, fire brigade, ambulance, machine gun. The playback speed can be adjusted with the potentiometer on the board. Includes on / off switch and loudspeaker. Specifications Power supply: 9V battery (not included) Dimensions: 60 x 40 mm https://elecena.pl/product/27742109/whadda-sound-effect-generator-police-fire-brigade-ambulance-machine-gun-kit 2025-01-23 https://elecena.pl/product/27742109/whadda-sound-effect-generator-police-fire-brigade-ambulance-machine-gun-kit 2026-02-21