ROCKBROS Electric Suction Cup Bike Rack for 1-3 Bikes Safe Mount

ROCKBROS Electric Suction Cup Bike Rack Aluminum Alloy Sucker Rooftop Bike Rack for 1-3 Bikes KEY FEATURES Upgrade--the electric version automatically pumps air, eliminating the need for manual operation and worrying about the safety of suction cups, solves the pumping problem with one button. With pressure alarm, when the suction is insufficient, it will give an alarm and automatically pump out the air, pump down is complete, alarm stops. In case of constant alarm, please stop and check the situation.