Roomba IRobot 500 series Auto advance mode cliff Sensor test

Roomba IRobot 500 series Auto advance mode cliff Sensor test
http://www.youtube.com/channel/UCNW5WqGuyUeYJ7OfTY3DvmA/feed

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Please watch: "IRobot Pool Cleaner in action"
➨ https://www.youtube.com/watch?v=zNwP11Ek90Y
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