DEEBOT OZMO T8 is the first vacuum and mopping robot with state-of-the-art TrueDetect 3D technology. With structured light technology and a 3D scanning algorithm, the robot scans surroundings extremely precisely and detects even the smallest obstacles in the room to avoid collisions, getting stuck or tangled. equipped with brand new TrueMapping technology, it maps your home with 4X accuracy. A deep clean with superior cleaning efficiency is ensured with ECOVACS powerful pressure-retention suction system. It has been occasionally used over the span of 3 years.