Revotec Electronic Fan Controller SpecificationsInnovation led Revotec to create the first electronic fan controller which is still Revotec's most popular product today. This small device allows the automatic triggering of the fan depending on the temperature of the coolant (via a probe which does not obstruct the flow). The trigger temperature is easily adjustable (from 70-120°C) on the probe using a provided small tool.The controller turns the fan on at the given temperature and automatically turns it off when the coolant drops by 3°C. Installation is very simple : install the controller on a coolant hose and just connect it to the fan with the supplied hardware. The controller works with any 12V fan (24V version available by special order) and is supplied with a wiring harness 30A relay dust cap adjustment tool and hose clamps.