u-blox OBS421X-24 蓝牙模块，V4.0，1级，2.4GHz，意法半导体STM32F10x，德州仪器CC2564，-91

Used IC: ST Microelectronics STM32F10x, Texas Instrument CC2564

Interfaces: UART

Certifications: ETSI RED, UKCA, FCC/CFR, IC RSS, MIC, SRRC

Bluetooth Class: Class 1

Bluetooth Version: Bluetooth 4.0

Working Frequency: 2.4GHz

Integrated Antenna: No

External Connection: U.FL Connector

Supply Voltage Range: 3V to 6V

Receiver Sensitivity Rx: -91dBm

Bluetooth Module Dimensions: 36mm x 16mm x 2.6mm

Operating Temperature Range: -30°C to 85°C

Datasheet