Derale Adjustable Electric Fan Controller Mechanical 16769

This mechanical fan controller features an adjustable turn-on temperature range between 32ºF-240ºF with turn-off present at 10ºF below turn-on.

Uses capillary tube that installs in radiator inlet tube. Maximum capacity: 16 amps.

Features

• Adjustable turn-on temperature from 32-240ºF
• Turn-off temperature is preset at 10ºF below turn-on temperature
• Radiator hose probe design
• Rated at maximum 16 amp continuous draw
• Note: Operates up to a 16 amp fan or two fans with a combined draw of 16 amps or less

• Application: This mechanical fan controller suits builds needing a fully adjustable turn-on temperature rather than a fixed preset switch, using a capillary tube probe that installs directly in the radiator inlet hose to sense coolant temperature.

• Size/Spec Context: The wide adjustable range from 32°F to 240°F covers cold climate and high performance applications alike, with turn-off automatically set 10°F below whatever turn-on point is selected, giving consistent cycling without a separate off adjustment.

• Construction Note: Rated at a maximum 16 amp continuous draw, suiting a single fan up to 16 amps or two fans with a combined draw of 16 amps or less. The capillary tube radiator hose probe design senses coolant temperature directly rather than relying on a threaded sensor in a boss.

• Fitment Note: Suits radiator inlet hoses where the capillary tube probe can be installed. Confirm your combined fan draw stays at or under 16 amps before wiring two fans through this single controller, as exceeding this will overload the unit.

• What to Pair With: Commonly paired with a single high-draw electric fan, or two smaller fans wired together provided the combined amp draw stays within the 16 amp rating.

• Practical Buyer Tip: Because turn-off is always 10°F below your chosen turn-on point, pick a turn-on temperature with enough margin below your engine's overheating threshold to avoid the fan cutting out too early during a hot idle.