1. The product is made of high-quality materials with guaranteed quality2. The product is designed with ultra small size, and compact, with digital display3. Support four-wire fan speed regulation, product shipped with probe cable4. Support low-temperature shutdown of fans up to 3A, to directly turn off the fan power, and support reverse timing fans5. Stable product performance and long service lifeParameters:Design power supply voltage: DC12VVoltage range: DC8-16V (circuit working voltage, please pay attention to the fan voltage range)Circuit self consumption: less than 40mA (tested at 12V)Fan current: not exceeding 3.3APWM range: 1-100 (signal percentage non actual speed 0.5%)PWM frequency: 25KHZ (plus or minus 1KHZ)PWM signal amplitude: 5V (no-load)Temperature measurement range: -9.9-99.9Temperature measurement error: The error within the range of 0-50 is less than 1.2 , and the error in other ranges is less than 2Note:This speed controller only supports 4-wire PWM fans, and does not support 2-wire and 3-wire fans.The included large black spot probe is relatively suitable for air detection. If you need to bring your own probe, please note that the probe resistance is 10K and the B value is 3950!Material: PCB+electronic componentscolour: PurplePackage Contents:1 x Fan temperature control regulator1 x large black spot probe cableOnly 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.