The Module SOC-8 is made for controlling the minimal-power output devices through RS-485. With this, it search its function in distributed control and visualization systems. This function can straightly control other DC loads having 24 V control voltage and 0,5A current and other materials such as contractors, relays and light bulbs. This process also ensures a protected operation of the master system without harming due to dangerous overvoltage with the help of galvanic separations. Through the RS-485, the operating functions of this device can be carry out from any typical visualization software or which is fitted by MultiCon CMC-99 controller.