Patent ID: 7473899

Claim:
A method of selecting a specific focusing view for a motion detector device comprising a lamp assembly, a junction box assembly with a cylindrically shaped holding arm, a rotation assembly incorporating a sensor seat, a pyro-sensor and circuitry, and a lens assembly, the method comprising: incorporating and moulding a plurality of multifaceted lenses with pre-determined focuses constituting different focusing views to form the lens assembly; providing with zone-indicating marks along the circumference of a lens frame of the lens assembly denoting edges of each focusing view; attaching permanently a main printed circuit board assembly onto the rotation assembly and carrying the sensor seat inside to face the front of the motion detector device; providing with a central indicating line and two side indicating lines on the rotation assembly; rotationally aligning the vertical axis of the lamp assembly with the central indicating line on the rotation assembly; and rotationally aligning two zone-indicating marks on the lens assembly with the two side indicating lines denoting the edges of each focusing view, whereby a focusing view on the lens assembly is rotationally selected for the motion detector device.