General description 1 Pcs Dual Mode Virtual Navigation Wall Barrier is designed for use with 600/700/800/900/E/I/S Series Robots. It utilizes an infrared beam to block access from doorways and other restricted areas. Technical specifications Size: 4.3 x 4.3 x 10.5 cm Material: ABS Color: Black Power Requirement: Requires 2 AAA Batteries (not included) Measurement allowed error: +/- 1-3 cm Package Contents 1 x Virtual Navigation Wall Barrier Other information