Panasonic ENW89857AXKF Evaluation Board evaluates PAN1781 BLUETOOTH® Low Energy (LE) module. This module features the nRF52820 single-chip controller that is ideal for IoT wireless applications. The ENW89857AXKF evaluation board features an Arduino Footprint and allows hardware access to the module pins as well as easy stacking of separate sensor test shields. This evaluation board features a segger J-link on-board debugger, FTDI UART-USB converter, native USB interface, Arduino UNO R3 header, and offers access to all modules. The ENW89857AXKF evaluation board also features two user buttons, two user LEDs, current measurement pins, and u.FL connector. This evaluation board operates at the 1.7V to 5.5V voltage range and -40°C to 85°C temperature range.