Control devices Create Talk0 Category page This page needs content. You can help by adding a sentence or a photo! Add to this page! “(PsyPerspective) A timer is a specialized type of clock. A timer can be used to control the... Timers (apparatus) Pages in category "Control devices" This category contains only the following page. T Timers (apparatus) Retrieved from "http://psychology.wikia.com/wiki/Category:Control_devices"