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.