Patent ID: 7633067

Claim:
A security sensor device which comprises: a sensor body; an element unit including a sensor element for transmitting or receiving a detection wave, the element unit being supported by the sensor body for adjustment of a horizontal deflecting angle and a vertical deflecting angle; a cover mounted on the sensor body for covering the element unit; a center of pivotal movement for vertical deflection in the element unit being set to an eccentric position downwardly or upwardly displaced from a portion of the element unit intermediate in a vertical direction thereof; a stepped portion; a recessed portion, which is recessed inwardly of the cover beyond a neighboring portion, being formed through the stepped portion in a portion of the cover on one side to which the center of pivotal movement of the element unit is displaced; and a hood provided at a location upwardly of the center of pivotal movement in the cover for shielding at least a portion of an area of passage of a detection wave for the sensor element from an airy region.