The Laird Connectivity Sterling-EWB is a development kit integrated with Chip Antenna. Sterling™-EWB is a high performance 2.4 GHz WLAN and Bluetooth combo module based on latest-generation silicon (Cypress’s CYW4343W) with an integrated ST Micro STM32F41 Bluetooth 5.1 (Errata) BR DR/LE
WLAN and Bluetooth coexistence
Cortex M4 microprocessor
Operating voltage: 3.0V to 3.6V
Operating temperature: -40° to +85° C