SOViK 6" 6 inch Stroke Small Linear Actuator, 12V DC Built in Limit Switch, 55lbs Maximum Lift Includes Mounting Brackets, for Air Vent Opening, Gate Opening and Shutter Control Input Voltage: 12 DC Starting Current(No-load): 0.1A Max Current: 1.5A Load and No-load Speed: 55lbs/ 0.32&#034; per sec, 44lbs/0.63&#034; per sec, 22lbs/1&#034; per sec Mounting Length (Retracted Length): 12 inch/300mm Mounting Holes: 6mm diameter Material: Aluminum alloy If your actuator can&#039;t move after connect the power correctly, you should swap the connection locations of the two wires and try again. Please don&#039;t rush to think that the actuator is defective, it&#039;s very likely that your first connection is to retract it instead of extend it. If you have any doubts, please do not hesitate to send message to us. The item is suitable for various <u>windows / shutters /gate</u> which need to be opened and closed For the DIY lovers, their functions will be up to your imagenation. <u>Item weight just only 1 pound</u>,you can hold it to anywhere without any burden. You can use it anywhere when you need an <u>automatic linear motion</u>. Get rid of bulky, get rid of changeless, just go for it! Prepare to connect the two wires of the actuator to a 12 volt battery Red wire to the positive terminal and black wire to negative terminal will make the actuator extend. To make it retract, just reverse the terminal connections If the actuator does&#039;t work when you first connect, don&#039;t worry, just exchange the connection locations of two wires To simplify the last step, you can prepare a reverse polarity relay or switch for the actuator. When you want the actuator to extend and retract, just press the switch Your actuator will hold its position when the power is off. It will automatically stop when reaches the end. Due to the limit switch is built in. <span class="a-text-bold"></span>Please use the 12V DC power adapter The actual load does not exceed the rated load All the actuators have duty cycle, they are unable to work all the time without stop. The duty cycle of this actuator is 25%. it means that your actuator needs 3 minutes to rest for every 1 minute of work. If the actuator keeps working for long time, the motor is easily burnt out. Use the lubricating oil properly (Original type of lubrican is Mobli XHP222 grease) Please be careful, the actuator not completely waterproof 1pc SOViK 4&#034; Stroke In-line Design Linear Actuator 2pcs matched Mounting Brackets