Wireless motion activated light fixture base plate and kit

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[0021] Shown in the accompanying Figs. there is shown a kit, generally referenced as 8, designed to convert a standard light fixture 12 into a motion activated light fixture 12. The electrical box cover plate 18 may be sold and distributed separately or combined in a kit 8 with a wireless motion detector 70 capable of transmitting signals to the wireless receiver 46 located in the cover plate 18.

[0022] In the preferred embodiment, the cover plate 18 is a cylindrical structure with a flat front surface 20 and curved outer sidewalls 22. Formed centrally on the front surface 20 is a cylindrical recessed front cavity 25. The depth of the front cavity 25 and the width of the sidewalls 22 are substantially identical so that the cover plate 18 may be mounted flush on a flat, vertical support surface 90.

[0023] As shown in FIG. 3, formed on the back of the cover plate 18 is a ring cavity 28. The ring cavity 28 is divided into two first and second rear cavities 31, 33 by two radially aligned