The Station Time Grade Time Stop Time and Relay Time Testing Device (SGSRTD) is a portable device that allows one to test whether various railroad-based components and elements, circuits, controls, relays, and systems are operating optimally or pursuant to manufacturers' specifications. SGSRTD comprises a multitude of components, including a power switch, electronic programmable timers, connectors, shunt switch, DC relays, AC relay, and leads. When coupled with a limit switch, an SGSRTD system is formed.