Raytac released the AT Command Evaluation DK Board.
Part No.: MDBT42Q-AT-UART

Raytac AT-Command nRF52810 Module:
More information about UART service (AT Command), Pls refer to below link
https://raytac.blog/2018/03/28/nordic-nrf52810-at-command-ble-module-by-raytac-mdbt42q-pat/