Ends 3/31 at 9AM PDT. NoMoreRack has the Wireless Driveway Alert System for $15 + $2 shipping = $17 shipped. Features wireless motion sensor mounts and a 200 ft. range.
Harbor Freight has the Wireless Driveway Alert System for $19 - 20% off with coupon code INSURE20 + $7 shipping = $21 shipped. Features wireless motion sensor mounts and a 200 ft. range.
Harbor Freight has the Wireless Driveway Alert System for $15 - 10% off with coupon code WINTER10 + $7 shipping = $20 shipped. Features wireless motion sensor mounts and a 200 ft. range.
Harbor Freight has the Wireless Driveway Alert System for $18 - $3 off with coupon code 80808245 + $7 shipping = $23 shipped. Features wireless motion sensor mounts and a 200 ft. range.