Cheap And Discounts EFR32BG22 Bluetooth Wireless Module E104-BT53A3 BLE5.2 6dBm Build-in Crystal Oscillator SMD Module Cortex-M33 BT5.2 ISM 2.4GHz Wholesale. Buy Directly From Merchant COJXU IOT Factory Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.