Check the listing for details. Pi 4 Raspberry Pi RTC Real Time Clock+Temp SensorFan and Heatsink compatable. Condition: New, Made in United Kingdom. Listed at 14.24 USD. New version of our ever popular Pi RTC. Now compatible with a low profile heat sink being fitted to a Pi 3 or 4 and supporting fan control, such as the fan available for the Official Pi4 case. A 3pin 0.1" header will need to be fitted to plug the fan into (not supplied). four-d-pi-shop is the ebay arm of CJE Micro‘s & 4D, who have the world's widest range of Raspberry Pi/RISC OS & Acorn accessories including many from third parties, most of which are famously normally 'In Stock'. Established in 1981, we have always specialised in hobbyist computing and have gained a reputation for a broad knowledge with high quality pre- and post-sales service. CJE & 4D have, over the years, developed many of our own products for Acorn/RISC OS & Raspberry Pi computers. From the first ever 3rd party acces.