... doors, it is control the rolling door system: up, down. loading weight:600KG,800KG roll up door openers, is 220V,50Hz.Power: 120W ... . Max up: 800N. Max door high: 4M. remote control range ... : 15m2. Output: 8N/m.The bearing-weight: 600kg,800kg,1000kg. roll up door openers