Use a Dual Mode Virtual Wall Barrier to manage where your robot cleans. Virtual Wall Mode blocks openings of up to 10 feet, keeping Roomba in the rooms you want cleaned and out of the ones you don’t. Halo Mode creates a 4-foot diameter keep out zone around items you want to protect. Compatible with Roomba 500, 600, 700, 800, 900, e, i and s Series Robots.|What's In The Box:1 Dual Mode Virtual Wall Barrier2 AA BatteriesSpecifications: Package Dimensions: 3.3 x 2.9 x 4.5 inchesPackage Weight: 0 .4 lbs.