Velleman MK113 SIREN SOUND GENERATOR Generates 4 different sounds: police siren, fire brigade, emergency vehicle and laser gun. RV1 adjusts sound pitch. On/off switch and PCB speaker included. Specifications power supply: 9V battery (not incl.) dimensions: 60 x 40mm / 2.4 x 1.6" Data Sheet https://elecena.pl/product/19294884/siren-sound-generator 2021-08-28 https://elecena.pl/product/19294884/siren-sound-generator 2025-07-09