Low Battery Indicator:The indicator light will remain off during normal use, and will light up when the battery is low and needs to be replaced. PACKAGE INCLUDES – Dual mode virtual wall barrier x 2 NOT INCLUDE BATTERIES Shop for the 2-Pack Dual Mode Virtual Wall Barrier for Roomba, Light House Compatible with iRobot Roomba 800 900 600 I S & E Series e5 e6 i4 i6 i7 i8... Attention :NOT for roomba 500 700 series PARTIAL 600 SERIES PRODUCED BEFORE 2015 MAY NOT BE USED. DUAL MODES – Halo Mode: which allows a 4' barrier around the device, to keep Roomba out of this area. 2-Pack Dual Mode Virtual Wall Barrier for Roomba Electronic Barrier Dual Model Virtual Wall Barrier For IRobot Roomba I, Qatar Roomba Vacuum Contact us any time if you have any questions we will respond in 24 hours. Invest in the supeio quality and compehensive design of the TUOENTumpet Valve epai Kit and estoe you instument's vibant sound today! Enjoy effotless pefomance and yeas of musical delight with you pefectly maintained tumpet valves and sping felt washe The virtual wall barrier is formed.