Feature:【Capillary Car Thermostat】The adjustable electric fan thermostat controller with stainless steel temperature probe sensor, it is made of high-quality steel and plastic with guaranteed quality, good performance and long service life.【Probe Design】The probe attached to the controller can measure the temperature of water, coolant or contact, and transfer power to the fan so that the fan can start at the selected temperature, which is very convenient for your life.【Adjustable Temperature】Our temperature regulator has a black adjustable button, it allows you to set the temperature of the cooling fan running between 0 ℃ ~ 120 ℃, you can control the operation of the fan according to the temperature you need.【Efficient Regulation】Maintain optimal engine temperature with this capillary car thermostat, ensuring smooth performance in various conditions.【Durable Construction】Crafted with robust materials, this thermostat withstands the rigors of daily driving, offering long-lasting reliability.Specification:Voltage: 12VMaterial: Steel+PlasticTemperature Range: 0℃～120℃Accuracy: 4±2℃Temperature Bar Length: 104mm/4.09inchTemperature Sensing Rod Diameter: 5mm/0.20inchCapillary Length: 1000mm/39.37inchWiring InstructionsC Terminal = 12v FeedNo2 Terminal= Power out to the fan(the switch is earthed through the fan)No1 Terminal= Leave blank, this is not required for this applicationYou can also wire a relay in if you wish, but this is not a requirement.Package Included:1x Switch