Compatible with: For 500 600 700 800 900 E/i/s/j Series i7 i7+ i3 i3+ i4 i4+ i6 i6+ i8 i8+ j7 j7+ E5 E6 E7 Robot. Meet your needs - Virtual wall mode keeps your robot in the room you want to clean and away 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 10ft beam of infrared light to help enter or exit a specific area Made of high quality material, more . The navigation wall uses 2 AA batteries (not included) with a low battery indicator light, effectively helps you control the working range of robots Material: ABS Color: 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 a little different from the real thing. The measurement allowed error is +/- 1-3 cm.