RF-BM-2340T2 is a newborn multi-protocol module based on TI CC2340R5 chipset which supports Bluetooth 5.3 low energy (BLE), ZigBee 3.0, SimpleLinkTM TI 15.4-stack, and Proprietary system. The same as RF-BM-2340T1, the Bluetooth transceiver module has a 48 MHz crystal, 512 KB of in-system Programmable Flash, 12 KB ROM for bootloader, and 36 KB of ultra-low leakage SRAM. Also, it features rich peripherals with UART, SPI, I2C, Real-time clock (RTC), etc.
The only difference is that RF-BM-2340T2 comes with chip antenna and half-hole RF out interface.
Reference Resource:
Affordable CC2340R5 Bluetooth 5.3 Modules - In Stock Now
Intorduction of CC2340 Series Ultra-Low Power BLE Module RF-BM-2340B1
Comparison in CC2340 Bluetooth LE modules