The RN4678U-V/RM100 with Bluetooth Modules (802.15.1) BT4.2 Dual Mode no shield & no Antenna Module with ASCII Interface manufactured by Microchip is a small, low-cost, low-power wireless communication module. This module is designed for short-range wireless communication applications in the Industrial, Medical and Consumer markets. The module features a high data rate, Class 1 Bluetooth low energy radio, integrated microcontroller, robust encryption and authentication, and a Bluetooth Low Energy and classic Bluetooth stack. It has an ASCII interface for easy implementation and use, and does not require an external antenna or shielding. This module is capable of data speeds up to 1 Mbps and supports a wide range of communication protocols. This module is ideal for applications that require a low-cost, low-power, reliable, and secure wireless solution.