The RF-BM-2340QB1 from RF-Star is a 2.4 GHz Automotive-grade Bluetooth Transceiver Module. It supports the Bluetooth 5.3 Low Energy (LE) protocol and has a transmission range of 130 meters. This module offers excellent radio sensitivity and robustness for automotive applications, including Passive Entry Passive Start (PEPS), Remote Keyless Entry (RKE), Car sharing, Piloted parking, and Cable replacement. It requires a DC voltage of 1.8 to 3.8 V. This module features a 48 MHz ARM® Cortex®-M0+ processor and includes multiple interface options like ADC, UART, SPI, I2C, and I2S. It is available in a surface-mount package that measures 22.5 x 15.55 x 2.1 mm and has an operating temperature range from -40°C to +125°C.