1.professional manufacturer for gate operator 2.high quality and competive price 3.5 years warranty ... , one control box, 2 remote controls, mounting accessories)each pc arm could be left or right while in instalaltionSupply voltage:24VDC ... ,Running time protection: Adjustable, Auto closing delay time: Adjustable,Controlling single or double-leaf,Force: Adjustable is optional,Protection class: IP54 ...