This Schneider Electric SpaceLogic C-Bus Saturn A Series Key input unit control and automate lighting and many other electrical products. The key input unit is with 4 keys. This Wall plate function as the load switch, dimmer, scene control, roller shutter, bell push switch, curtain, and time switch. This C-Bus communication network type is of a maximum of 50 connections. The connection of the device is made with a terminal block. The device is of 4 gangs. The rated current is 22mA. The Ue-rated operating voltage is from 15VDC to 36VDC. The LED signaling is with a blue or orange color indication. The mounting of the device is done with a Wall box support. The dimension of the product is (W) 75mm x (H) 116mm x (D) 28mm. The color of this device is Pure white. It is made of plastic material. The operating temperature is from 0°C up to +45°C. The Relative Humidity is from 10% to 95%. It is a completed product provided with a fascia plate, switch, and cap. SpaceLogic C-Bus is a powerful, fully integrated system that can control and automate lighting and many other electrical systems and products. The system is robust, flexible, scalable, and has proven solutions for buildings of the future.