Specification: 1) 24V, 200W or 36V, 300W brushless motor,three speeds adjustable ,with cover, power system with soft start protection ,make battery using time longer , motor and battery service life also longer 2) With LED light, LCD power display 3) Easy operating, it can climb up and down stairs smoothly and steadily by track. 4) It won’t glide or fall down when stop on the stairs, very safe and reliable. 5) Circuit is inside the pipe, waterproof, long life time, motor is no noise during operating. 6) The installation position of the battery is in accordance with international standards, not close to the body, make users feel more comfortable. Detachable battery 7) With 4 wear-resistant rubber wheels, the chair can use as a wheelchair on the ground. 8) The chair is equipped with vest type ,metal buckle straps, to ensure the safety during transport. 9) Made of aluminum alloy, foldable, compact and lightweight. 10) The electric stair chair is widely used in the home for the old people, school security, hospitals, hotels etc for emergency evacuation. Accessories: vest belt, lithium battery, wrench set, spongy cushion Optional: Dust cover, Wall bracket