iRobot on Twitter: "@recrudesce @SecRich No need to worry, your Roomba has Cliff Sensors, that will stop him from falling down the stairs. But if you would like a Virtual Wall, take
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iRobot - Cliff detection sensor helps #Roomba e5 to avoid falling down stairs and other dangerous drop-offs. Learn more about the Wi-Fi connected, Alexa integrated smart robotic vacuum cleaner: https://irobot .in/Introducing-Roomba-e5.aspx | Facebook
iRobot Roomba 980 Robot Vacuum Cleaner, Black / Brown