Compatible with: For 500 600 700 800 900 e5 i3 i7 Series. Meet your needs - mode keeps your robot in the room you want to clean and from the room you don't want to clean Dual Mode - Halo Mode, which allows a 4-foot barrier around the device to keep out of the area. Beam Mode, which produces a 10-foot beam of infrared light to help enter or leave a specific area navigation wall uses 2 * aa battery(Not included) with low battery indicator light, Effectively help you control the work scope of robots size: 4.3 x 4.3 x 10.5cm Material: ABS colour: Black Package Contents: 1 x Virtual Navigation Wall Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.