Description:1. This controller supports 2-3 wire fan temperature control and speed regulation with DC 5V-12V current not exceeding 0.9A, through smooth voltage reduction control, and supports low temperature shutdown of the fan power.2. Please note that the power supply voltage must match the fan voltage!3. Please pay attention to the positive and negative polarity of the wiring! If the connection is red, the circuit board "FUSE bit" may be tColor: As shownMaterial: PC+Metals:Probe: 40cmWorking voltage: DC 5-12V (board working range DC 4.6-13.5V, over-range protection)Control fan current: 0.1-0.9A (lower than 0.1A fan control effect is poor)Circuit s-consumption: 10-30mATemperature probe model: 50K B=3950Circuit operating temperature: -10℃ to 60℃Probe temperature resistance: small 120℃, ring probe 110℃Board size: 54mm x 13mm x 8mm (without interface), the fan interface extends 7mmFactory default settings: basic speed control output Po=35%, acceleration temperature Tu=30°C, temperature control interval Td=5°C (35°C full speed), and the fan does not shut down when the temperature is low.Note:1. The fan current cannot exceed 0.9A2. The controller does not participate in speed measurement3. Do not connect the re polarity!!Board operating voltage range: DC 4.5-13.5VAbnormal status indication:No output "1" light fes quickly: power supply voltage is too lowNo output "3" light fes quickly: power supply voltage is too highPackage Contents:2 x Temperature Control Speed Controller Governor RegulatorOnly 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.