/diy/ - Do It Yourself

>>1307013
They automatically go back to the docking station when the battery gets low. The 980 has six sensors (circled) on the bottom to detect stairs. I run mine upstairs on carpet all the time and it's never once fallen down the stairs. People don't realize with the older models you have to take them from room to room in order to get the job done completely. Otherwise they just run around until their battery is almost dead and then they dock and that's all they clean. You'll have to physically put the older models in one room at a time in order for them to fully clean each room. The 880 model has about enough battery for about 3 average rooms, but once it's outta juice it docks and that's that. I got the 980 because it cleans until the battery gets low, docks, recharges, and picks up where it left off until the whole floor level has been done.