UC-YL4 Combined becon and siren

Combined becon and siren unit. Available in Orange and Blue color. Unit can be used as an external signal device for an Automatic Telephone system, or a Batteryless Telephone. Powered by 24 V DC gives loud audio signal and bright visual alarm, to ensure that call will be answered. Esspecially usefull in noisy areas such as engine room, thrusters room or control room.