Specification: Origin: Mainland China Product Model: EMC2101 Accuracy: 1℃ Operating Voltage: 3.3-5V Bus: I2C Product Weight: 3g Product Size: 25.00x18.00x5.00mm/0.98x0.71x0.2inch Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1*PC Fan Controller Temperature Sensor 1.Precision Temperature Control: Ensure your PC operates smoothly with the EMC2101 fan controller. This sophisticated chip offers precise temperature monitoring and fan speed adjustments with a 1°C accuracy, making it an ideal match for both 3-pin and 4-pin PC fans. 2.Intelligent Speed Adjustment: The EMC2101 enhances your system's efficiency by automatically adjusting fan speeds based on internal and external temperature readings. Connect an external temperature diode and set up a Lookup Table (LUT) to dictate varying fan speeds based on precise temperature thresholds, ensuring optimal cooling without the noise. 3.Quiet Operation Support: Say goodbye to noisy electronics with the EMC2101's ability to run fans at lower speeds when cooling demands are moderate. This reduces the vibrations and noise associated with fans running at full speed, allowing for a quieter environment whether you're upgrading an existing project or building a new one. 4.Easy Integration: Delivered on a custom compatible with Stemma QT form-factor PCB, the EMC2101 breakout board simplifies the integration of fan control into your projects. It's designed for seamless use with a variety of devices, thanks to its voltage regulator and 5V tolerant pins that accommodate both 3.3V and 5V microcontrollers or single-board computers. 5.Solderless Connectivity: The EMC2101 comes compatible with SparkFun qwiic/STEMMA QT connector for the I2C bus, offering easy, solder-free connections to your control device. This standard connector also makes breadboard prototyping straightforward, allowing for quick and hassle-free setup and testing.