... , Stable lifting height,high load capactiy 3, Perfect compact structure Self-propelled aerial work platform,There is battery, Not needs other power ... .3. Installing Emergency button,Can keeping working person safe.4. Self-locking funtion will work when electricity is suddenly cut off ... -24V30-16.81850SJZ1-121000120002450×1350128DC-24V2.2×20-16.82260 Self-Propelled Scissor Aerial Working Paltform