Low Power Consumption, high efficiency and excellent weatherproof heavy-duty motor. All the joint on the housing are armed with waterproofing seal (IP67), which is appropriate for use in outdoor environment. Stabilized start speed to effectively avoid water hammering to prolonge the service of life tubes. Continuous mechanism position indication. Low noise level. Built - in Thermal Protection which prevent motor burning out. Auto declutch type manual override. (Model : MOD - 2-1 & 3-1, to MOD -12).