Square Pulse

Hi. I’m new at the wiring in Garry’s Mod, but trying to learn. My friend showed me how to use a square pulse to make a hydraulic go back and forth. One problem though, it goes way to fast. Is there (I’m pretty sure there is) a way to slow it down? What chips and things would you use? And how do you wire it? Hehe I’m a noob to the wiring.