الوصف

1)Powerful strength, overheat protection when overloaded 2)In case in the absence of power, a release chain can be operated door manually 3)Loading up to **0kg/**0kg/**0kg/**0kg/***0kg 4)Limit switch unit enables precise adjustment of door in both up and down position 5)Electric and manual operation 6)Control panel wiring available to safety device, alarm lamp and remote controller 7)Easy installation, legerity design, low noise, small power consumption 8)Overheat protection