Electric Fan Controller Kit 0444 is designed to turn on fans by sensing air temperature as it passes through the radiator with the sensor placed in the radiator fins, so there is no need to cut hoses. It has an adjustable temperature range of 104 to 230 Fahrenheit / 40 to 110 Celsius and can display Centigrade or Fahrenheit. Temperature is set by pressing the set button. The controller can run 1 or 2 fans. The second fan (if applicable) will start 10 seconds after the first fan starts. It can be operated thermally and can also be powered any time the air conditioning is on. Max voltage: 15V Max current: 50A Relay setup: Dual relay Speed: Single speed - 10 second delay to start up the second fan Applications: works with single and dual fan applications Temperature Display: LED digital temp display - actual temperature + set temperature Temperature Display: Centigrade or Fahrenheit Temperature settings: 104 to 230 F (40 to 110 C) Temperature setting: Push Button Circuit type: Pre-programmed Mini controller Output wires: Batt + Batt - , AC Clutch, Fan 1, Fan 2 Thermistor Probe Dimensions: 3.75inch x 2.6inch x 2.2inch (95 x 65 x 56 mm) You can use the A/C wire as a manual override by providing it with 12 Volts from a switch. Colour:black Material:plastic Package Contents: 1 x Digital Fan Controller set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.