Abstract: A speaker mounting assembly adjustably supports a speaker from a mounting surface. The speaker mounting assembly comprises a speaker enclosure, a support arm, and a mounting bracket mounted to a mounting surface. The speaker enclosure defines a window opening, and the window opening is constructed to receive entry of an insert portion of the support arm. A latch supported by the enclosure and extending from the window opening can be used to engage with the insert portion to automatically retain the support arm when the insert portion is inserted into the window opening. A post extends within the enclosure window and the insert portion engages the post so as to enable pivoting of the speaker enclosure about the support arm. A set screw extends through a channel of the support arm toward the mounting bracket and based on position of the screw, permits pivoting of the support arm about the mounting bracket.

Abstract: A security sensor apparatus senses movement of an object. The sensor apparatus includes an electronics arrangement having an optical emitter and an optical receiver. The optical receiver has an axis of reception. The optical emitter emits a first beam along an axis of emission in an emission direction. The axis of emission diverges in the emission direction from the axis of reception at an angle of at least two degrees. The electronics arrangement is mounted in association a first surface of the object or a second surface of a structure disposed in opposition to the first surface. A reflector arrangement includes at least one reflective surface and is mounted in association with the other of the first surface and the second surface. The at least one reflective surface receives at least a portion of the first beam and produces a second beam directed at and received by the optical receiver.

Abstract: A security sensor apparatus senses movement of an object. The sensor apparatus includes an electronics arrangement having an optical emitter and an optical receiver. The optical receiver has an axis of reception. The optical emitter emits a first beam along an axis of emission in an emission direction. The axis of emission diverges in the emission direction from the axis of reception at an angle of at least two degrees. The electronics arrangement is mounted in association a first surface of the object or a second surface of a structure disposed in opposition to the first surface. A reflector arrangement includes at least one reflective surface and is mounted in association with the other of the first surface and the second surface. The at least one reflective surface receives at least a portion of the first beam and produces a second beam directed at and received by the optical receiver.

Abstract: A shielding assembly and method for use with an electromagnetic field generating source. The assembly includes an outer housing that includes a conductive material. The outer housing defines a chamber in which the field generating source is located. A polymeric inner body substantially fills the chamber. The inner body is spaced from and circumscribes the field generating source. The field generating source may be the resonant oscillator of a microwave transceiver circuit and the inner body may advantageously include between 2–10%, by weight, of a semiconductive filler such as carbon or graphite. A printed circuit board may be attached to the outer housing to define the chamber together with the outer housing. The inner body may be secured within the chamber by compressive engagement between the printed circuit board and outer housing. Spacing elements are used to provide a clearance gap between the printed circuit board and the inner body.