Hello Arsenlupen
Thank you for your questions regarding the Roomba i3+, which we are happy to answer. Like all Roomba models from iRobot, the Roomba i3/ i3+ is equipped with several fall sensors. It is able to detect stairs and other fall hazards. The Roomba i3/ i3+ also uses gyro navigation to clean and follow straight paths around your home. It always knows where it is, where it has cleaned and where it needs to go. The built-in bumper - a kind of shock absorber - has built-in sensors that help it detect large and solid objects. However, the Roomba i3/ i3+ is not able to identify small objects, such as cords or toys. The Roomba i3/ i3+ is able to go over heights of 1.6 cm and is therefore also able to vacuum short pile carpets. We hope we have been able to help you. If you have any further questions or doubts, please do not hesitate to contact us.
Best regards,
Your iRobot Team