Federal Signal 450E-024 Vibratone® 450E General Purpose Non-Metallic Electronic Horn, 12 to 24 VDC, 0.12/0.22 A, 109/99 dB

Model 450E electronic horn offers a patent pending electronics design that produces a very loud, clear and distinctive electronic tone This model is capable of producing sustained tone or coded blasts through push button or PLC control devices without duty cycle or interval limitations.