Olide Double-chain Automatic Window Opener DC24V One complete set window opener include the accessory:window opener housing, chain, motor, bracket, screws, receiver,remote control,the details included in the following picture. PS: Window opener stroke can be customized, if shorter or longer stroke is needed, please contact with us. Double Chain Window Opener Features High quality two-layers stainless steel chain, which make the chain stronger and more anti-oxidate; The motor built in the overload protection system, when the electric current is beyond the scope of reted voltage, the motor will trip itself. It can avoid the motor burning out as the high electric current; The surface of the opener housing has electrophoretic processed, it is the best way to acid-resistant, akali-resistant, magma-resistant of buildings. Even the window opener in the harshest environment, it can keep 50 years no fading, no aging; Can be used for large windows. Applicable Window Type 1. Our electric window opening mechanisms is suitable for the below window types. 2. Please refer to the following technical specification to choose the suitable electric window opening mechanisms; different models have different max. load bearing weight, pull/push force and travel distance. Inductions of Accessories A. Receiver 1. The window opener can be closed or open by the receiver. 2. It can convert the 110V or 220V to the output voltage 24V DC , otherwise the window opener will be burnt. 3. It can receive the signal sent from the remote control. As usual,one window opener need one receiver B. Remote Control 1. The remote control is wireless,one remote control can control multiple windows at the same time if you want them open and close at the same time. 2. Just one press,the window will open or close automatically,it make the house smarter. C. Wind and Rain Sensor(extra buy) 1. The window opener can be equipped with the optional accessory wind and rain detecting system. 2. When detect t