roll up door openers use for rolling 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: over 30M.Use time: 15,000 times. Temperture: -30oC~60oC.Remote fluence: 315MHZ.Speed: 12cm/s. Max range: 15m2. Output: 8N/m. The bearing-weight: 600kg,800kg,1000kg.