Beacon Module BLE 4.0 nRF51822 ISD1820 3-5V Voice Module Recording And Playback Module with Microphone and 0.5W Speaker or improper installation

or improper installation

12-0-12 Transformer-500mA

Power Up: Connect the included adapter to the pen and plug into a wall outlet

Stontronics is the manufacturer licensed by the Raspberry Pi Foundation to produce the official power supply

Can I use HUZZAH32 for battery-powered applications

Beacon Module BLE 4.0 nRF51822 ISD1820 3-5V Voice Module Recording And Playback Module with Microphone and 0.5W Speaker or improper installationBeacon Module BLE 4. 0 nRF51822 The Beacon Module BLE 4. 0 nRF51822 is a compact Bluetooth Low Energy broadcasting module based on Nordic Semiconductor's nRF51822 chipset, designed for proximity based location services and IoT applications. Professional developers, IoT engineers, and embedded systems specialists use this module to build beacon networks for indoor positioning, asset tracking, and proximity marketing solutions. This module solves the