The EFB2455A3S-15MH4L is a high-performance Bluetooth 5.1 Low Energy (BLE) module manufactured by LAIRD CONNECTIVITY (NOW EZURIO), now part of the BT840 series. Designed for surface mount (SMD) assembly, this module operates in the 2.4GHz frequency band. It boasts a receiver sensitivity of -95dBm and a transmit power of 4dBm, ensuring reliable communication. The module incorporates 128KB of Flash memory and 16KB of RAM, providing ample resources for embedded applications. This BLE module is well-suited for a wide range of IoT devices, including beacons, wearables, and industrial sensors. Supreme Components International is an authorized distributor of LAIRD CONNECTIVITY (NOW EZURIO) products.