Easy to install fan controller available for mounting in-line in the top radiator hose. They use a maintenance free surface mount sensor to provide adjustable fan control in the range of 70°C to 120°C. Kit includes controller, loom, relay and fittings. Available with hose tails to suit all common water hose sizes and also with Revotec's unique self sealing fitting allowing the controller to be mounted directly within the coolant hose.