Specifications:

12-24v switchable with a layer of silent and constant flash

The first layer of silent constant flash can be switched to 220V

Switch 12-24V with constant sound and flash

The first layer of sound can be switched to 220V

12-24v switchable with silent and constant flash on the second layer

Two-layer silent constant flash switchable 220V

The second layer can be switched from 12 to 24V with normal sound and flash.

220V switchable with constant sound and flash on the second layer

Three-layer silent flash switchable 12-24V

Three-layer silent constant flash switchable 220V

Three-layer sound flash can be switched 12-24V

Three-layer audio flash can be switched to 220V

Four-layer silent constant flash switchable 12-24V

Four-layer silent constant flash switchable 220V

Four-layer sound flash can be switched 12-24V

Four-layer audio flash can be switched to 220V

Five-layer silent constant flash switchable 12-24V

Five-layer silent constant flash switchable 220V

Five-layer sound flash can be switched 12-24V

Five-layer voice flash can be switched 220V