Sfera Labs Strato Pi Fan is used to enhance the Raspberry Pi Model B version 2, 3, and 4 with a high-speed, temperature-controlled fan. It expands the operating temperature range of the Raspberry Pi. It also reduces or delays CPU throttling under heavy CPU load. NOTE: Raspberry Pi not included. Features & Specs * Power supply: 3.3 V, 5 mA, 5.0 V, 130 mA max. (fan on) * Fan speed: 9100 RPM * Fan airflow: 4.9 CFM * Fan noise: 23.6 dBA * Temperature accuracy: ±2 °C * Dimensions: (W x D x H) 50 x 45 x 10 mm * Operating temperature: -20…+70 °C * Storage temperature: -30…+70 °C * Relative humidity: 5% to 90% noncondensing * Weight: 10 g * High performance 9100 RPM, 4.9 CFM (Cubic Feet per Minute) fan * On-board LM75ADP temperature sensor and fan controller, with I2C interface * Slim design pass-through installation on the GPIO connector, compatible with many third-party expansion boards * I2C pin-headers to wire additional I2C devices https://elecena.pl/product/17765312/strato-pi-fan 2021-04-17 https://elecena.pl/product/17765312/strato-pi-fan 2022-03-25