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. Strato Pi Fan is a valuable addition to the Sfera Labs servers and I/O modules in applications where there are elevated temperature levels to contend with. The Strato Pi Base, UPS and CAN, the Iono Pi, and the Pi Touch Display are available at . Sfera Labs Strato Pi Fan can be purchased as a separate stand-alone board 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.