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Ground Control® TT levels and stabilizes your travel trailer quickly and accurately. It's a long and difficult process to get an RV level with manual jacks, chocks and wedges. Ground Control TT levels and stabilizes the travel trailer in a matter of minutes. First ever automatic leveling system for travel trailersUnder 3 minutes to level!Hitch height memory stored by Power Tongue JackAutomatic, one-touch electric levelingCompatible with OneControl™ wireless technologyFully electric system-no hydraulics