Sensor short circuit and open circuit protection function. The motor is running to block the automatic protection stop. It is easy to switch the jog / interlock state and the running direction of the motor. Up to 6 limit points (upper / lower limit and 4 intermediate positions) can be set. The displacement generated during the motor braking process can be automatically corrected. Specification: Brand new Materials:aluminum alloy Color:white Diameter(approx.):26mm Applicable Curtain Type:all apply Input:AC 100-240V Output:DC 24V Current:12A Torque:12Nm Rotate Speed:30rpm Frequency:43392MHz Remote Control Battery Type:2 xAAA(Not included) and automatically save the location and function parameters. Direct detection of the number of turns of the motor, high positioning ccuracy. Built-in superheterodyne receiver module, receiving sensitivity -110dBm. Note: Install motor terminal on the same side as supply. Terminal of motor with "Setting" key on the motor should face forward you. Tighten brackets until the motor is horizontal. Please replace the battery in time when the remote transmitter indicator does not shine or the remote-controlling distance evidently become shorter. Please take out the battery if the remote transmitter will not be used for a long time. Antenna shall be as straight as possible with position far from metal objectsDirectly contact to metal objects is prohibited;otherwise,the receiving distance will be influenced seriously. Plug Type:US Plug,it applies to Canada, India, Japan, Mexico, Thailand,taiwan the United States, the Philippines and so on. Package Included: 1 x electric shutter motor(US plug) 1 x remote control 1 x set accessories Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.