The TC66C is a small but multi-functional USB-C multimeter. By supporting current Quick Charge standards, it can also easily be used in conjunction with current hand-held hardware. https://elecena.pl/product/18506448/at34-usb-measuring-device-at34 2021-05-18 https://elecena.pl/product/18506448/at34-usb-measuring-device-at34 2025-06-15 https://elecena.pl/product/18506448/at34-usb-measuring-device-at34 2025-12-29 https://elecena.pl/product/18506448/at34-usb-measuring-device-at34 2026-02-08