@eicke Search this community website for: Dial connector And see the M5Stack Dial document page here: https://docs.m5stack.com/en/core/M5Dial https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/products/core/M5Dial/DB2EK-2.54-2P-GN-S 2.54mm 2Pin Green.pdf Also I just realized that the actual 2 pin part number is in the URL of the datasheet! DB2EK-2.54-2P-GN-S \o/