This temperature controlled fan HAT for the Raspberry Pi provides perfect cooling. After installing a script on the Raspberry Pi it is possible to adjust the fan speed. Furthermore, there is a power / reset button and LEDs to indicate the fan speed on the HAT. Technical data - Power supply: 5 V / 0.12 A - Fan speed adjustable via script - Power / Reset button - Status LEDs - Dimensions fan (LxW): 40 x 40 mm - Dimensions HAT (LxW): 65 x 55 mm - suitable for all Raspberry Pi (40-pin) Note: no soldering required, just plug in!