Ends 10/6. Amazon with Top Greener has the Top Greener Motion Sensor Light Switch (TSOS5-W) for $14.69 - $5.14 off with coupon code AN2K4PIG at final checkout = $9.55 with free shipping on $25+ or with Prime. Sells for $19+ elsewhere.

Has the adjustable delay time and coverage area of 980 sq. ft. Excellent Amazon reviews.