SPARO detects gunshots from .22LR (140J) to .223REM (1700J) caliber at a distance up to 30 m and explosions. The alert is notified by activating a contact (closing or opening). This indoor smart detector continuously analyses the usual sound environment of the site where it has been installed. It detects gunshots and explosions No sound is recorded, privacy is entirely guaranteed. The detector is standalone : sound pick up and analysis are integrated. Configuration can be done using your smartphone via the integrated wifi network