Horn Vibratone® with 0.25 A, 24 V DC. It produce a very loud horn tone by the electro-mechanical vibration of a diaphragm. It is capable of reproducing coded blasts or sustained tones through the use of a number of control devices from a push button to a PLC. It is enclosed in a zinc die-cast housing and sealed with grey powder-coat paint. The Model 350 features a stainless steel diaphragm and it has a range up to 200 feet.