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:

1. power supply: 9V battery (not incl.)
2. dimensions: 60 x 40mm / 2.4 x 1.6"

manual_wsah113.pdf

module_diy_kit_guide.pdf