Extra wireless transmitters can be used in other locations; for example a second driveway other buildings backyard etc
Compatible with 2500 series sytems only

Technical Details

Product Details

Product Dimensions

Package Dimensions
Width : 7.4 inch
Height : 6 inch
Length : 9.2 inch

Item Weight: 1.5 pounds (View shipping rates and policies)
Shipping Weight: 3.95 pounds (View shipping rates and policies)

ASIN : B008OMLI34