Battery powered sirens

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

Kids Fire Truck Toy with 4D LED Lights Realistic Sirens Battery Powered Interactive Play Vehicle for Boys Girls, Durable Mixed Color Design

Pyle 30W MegaphoneLoudspeaker: Waterproof, 730m Range, Built-in Siren, Soft Music Playback, Powered by Four D-Batteries, Lightweight (480g), 30W

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

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

Universal Plastic Motorcycle Bike Handlebar Battery Powered Bicycle Bell Air Horn Siren