Abstract: A strobe light of a type suitable for safety, notification, and intrusion systems and the like includes a base, a lens having a generally cylindrical side wall defining an opening at one end, having an end wall at the other end and being attached at its open end to the base, and a lamp/electronics assembly mounted on the base and received within the side wall of the lens. The base has a generally planar main wall that is shaped and dimensioned such as to form closure for the opening of the lens side wall and having a front surface facing the end wall of the lens and a rear surface facing away from the end wall of the lens. A generally centrally located mounting boss having a threaded socket is adapted to receive a threaded mounting member.

Abstract: An audio-visual alarm includes a flashtube and a voltage signal generator for producing and storing voltages sufficient to operate the flashtube. In series with the flashtube and the voltage generator is the coil of an audio alarm, whereby operation of the flashtube also operates the audio alarm. The audio alarm is selected so that its coil will not interfer with the operation of the flashtube.

Abstract: An audiovisual signaling device including an auditory signaling means, an inductor for energizing the signaling device, and a circuit interruptor in series circuit with the inductor. A flashtube is electrically connected to the inductor and interruptor, and the inductor acts as an electromagnet when a voltage is impressed across the inductor and interruptor. The series circuit is intermittently interrupted by the interruptor, and the flashtube is actuated in response to the decaying magnetic field of the inductor when the circuit is thus interrupted.