ECO-WORTHY 12 Volt 18 Inch Stroke Linear Actuator 1500N/330lbs with Mounting Brackets & Wireless Remote Controller Kit Input Voltage: 12VDC Stroke Length: 18&#034;/450mm Retracted length:24&#034;/600mm Extended Length: 42&#034;/1050mm Max Push Load: 1500N/330lbs Max Pull Load: 1000N/264lbs Maximum Load: 1500N/330lbs Travel Speed Without Load: 0.22in/sec (5.7 mm/s) Duty Cycle: 25% No-load current: 0.8A Max load current: 3A Protection Class: IP54 Rated Color: Silver Input voltage: 8V -35V Output voltage: 8V -35V Max Amps: 10A Fuse/AC adaptor: yes Prevent back-connect protection: yes Remote control distance: Less than 100 meters Keys A control positive turn, keys B control reverse turn. Keys C control insist positive turn, keys D control insist reverse turn. Red and green light shows the shock positive and reverse turn position. Connect limit A&amp;B to the power supply can stop the shocks working position. 1. The input voltage should be within 8V -35V. 2. Do not inflow water inside. 3. Do not make the positive and reverse turn in a short time. 4. It needs to replace the battery inside the remote controller when the control distance is shorter.(12V 23A) 5. The fuse may be broken when it had no any response. The linear actuators are controlled by applying a 12VDC voltage.Basically, connect the two wires to a 12 volt battery. Reversing the polarity will make the actuator reverse. Red wire to the positive terminal and black wire to negative terminal will make it extend. To make it retract, reverse the terminal connections. The actuator has pre-installed limit switche inside,it cannot be adjustable. It will hold its position when the power is off. It will auto stop when it reaches the end. Widely used in manyindustries, such as electric power, machinery, metallurgy, mine, petroleum, chemical industry, transportation, lifting, construction, food and feed processing and so on.