... Rolling code technology 4, Safety auto-Reverse 5, Manual Conversion Roll up door openers1, Inpout Voltage : AC230/110V selectable2, Motor Type ... code technology ,Super heterodye ASK modulation10,control box : stand alone wall mount control box with control logic board inside11 ... function19, Easy installation20, OEM, ODM is welcomed. Roll up door openers, roller door operator, roller door control box