iRobot 88701 vacuum supply

An Auto Virtual Wall prevents Roomba from entering areas that are off-limits. This model saves you a step, remaining constantly on so you don't have to remember to turn it on/off.

The Auto Virtual Wall uses an infrared beam, preset for 4 to 7 feet, to block Roomba from doorways and other off-limit areas. And you never have to remember to turn it on or off! Auto Virtual Walls remain on for up to six months. Requires 2 C batteries, not included. Compatible with Roomba 700 Series and Roomba 500 Series SKUs 51102, 53101, 53301, 53601, 54102, 55101, 55102, 56101, 56301 and 56502.