Battery powered sirens

3V Motorcycle Parts Plastic Bicycle Bell Battery Powered Bike Handlebar Air Horn Siren

Security Cameras Wireless Outdoor, 2K 3MP Battery Powered WiFi Security Camera with Spotlight Siren, 2-Way Audio, Waterproof

Security Cameras Wireless Outdoor, 1080P Battery Powered AI Motion Detection Spotlight Siren Alarm WiFi Surveillance Camera, 2-Way Talk, Waterproof

2MP Security WiFi Cameras Battery Powered for Home Security Wireless with Motion Detection, Spotlight/Siren AlarmColor Night Vision Waterproof