Item Type: Mini Electric Linear Actuator_x000D_ Material: Aluminium Alloy_x000D_ Working Voltage: DC12V_x000D_ Stroke: Approx. 50mm / 2in_x000D_ Distance Between Two Installation Centre Holes: Approx. 105mm / 4.1in_x000D_ Noise: 55dB_x000D_ Maximum Waterproof Grade: IP54_x000D_ Application: Smart smoke extractor, window opener, robot, home automation. 1Can be used in agricultural machinery, construction, cleaning and sweeping vehicles, ships and so on. 2You can also use it to replace hydraulic and pneumatic products, suits for saving energy consumption. 3The low noise operation is very smooth and safe, and when it reaches the top, it will stop automatically. 4Has overcurrent protection, short circuit protection, overload protection and overvoltage protection. 5Premium aluminium alloy material with IP54 waterproof grade ensure great durability for long-term use. 1 x Mini Electric Linear Actuator 2 x Mounting Rack 1. Before use, confirm whether the motor voltage is correct._x000D_ 2. Do not store or operate in a high temperature or humid environment, and do not place it in corrosive gas, which will reduce the efficiency of the motor.