YASONG YK-K008s-40 Amber 40 LED Magnetic Beacon Light, DC12V-24V, IP66, 7 Flash Modes, 16.4ft Cord Plug-in Alarm Sirens This model works by signal-triggered

This model works by signal-triggered operation: after power is connected

The YASONG SLA-05C alarm siren combines a 0–130dB adjustable horn

The page title mentions sound and no-sound options

IP65 waterproof housing for outdoor applications

12 built-in tones switchable by long-press button

YASONG YK-K008s-40 Amber 40 LED Magnetic Beacon Light, DC12V-24V, IP66, 7 Flash Modes, 16.4ft Cord Plug-in Alarm Sirens This model works by signal-triggeredThe YASONG YK K008s 40 amber LED strobe beacon light combines a 40 LED warning light design, DC12V24V vehicle power input and 16. 4ft cord for vehicles, trucks, tractors, forklifts, golf carts, cars, buses and work vehicles. This model uses a magnetic mount base with 5 strong magnets for quick placement on suitable metal vehicle surfaces. It can also be fixed permanently with screws when needed. 40 super bright LED beads for 360 degree visual warning