The VR Speaker from Bogen can be wired for use with systems that require a momentary contact closure for call annunciation. The embedded silicon-controlled rectifier circuit enables use with systems that require latching operation. It features 3" cone-type speaker and a 25V transformer. The transformer can be bypassed for 8-ohm operation. The speaker is protected from harm by the faceplate, a baffle plate with stamped perforations and a grille screen.