High quality signal technology from Compro, Digisound, Kepo and Neumüller Elektronik. From buzzers to transducers, horns, bells, sirens, signal towers, signal lights, flashing lights and rotating beacons, we offer you a wide range of acoustic, optical and combination signal transmitters. Our signal technology range is rounded off by our acoustic components such as piezo discs, microphones and loudspeakers.