The SPS-1 Video Sync Power Sensor monitors the on and off status of almost any video component. It is used to provide power status information to RTI control systems such as the RP-6 or XP-8 Remote Control Processors. Since most televisions and video source equipment output a video signal or "blue" screen when they are on, the SPS-1 can sense true on and off status. When the attached component is powered on, the SPS-1 detects the vertical sync pulse present in the composite video signal and sends a signal to the System Interface Module.