PAN1780 / PAN1770

The PAN1780 is a Bluetooth® Low Energy (LE) module based on the Nordic Semiconductor nRF52840 single-chip controller.

You can find long-lived documents on the official product websites:

PAN1780 (ENW89854A1KF)

The PAN1770 is the identical module, but with an U.FL connector for an external antenna instead.

PAN1770 (ENW89854C1KF)