The E73-2G4M04S1A Wireless Modules RoHS is a long range embedded Wi-Fi transceiver module. It is designed for use in low power IoT devices, and features BLE 5.0, 802.11 b/g/n standard, 4MB Flash memory, an ultra-low power power supply circuit, and an integrated antenna. This module is also certified for use in the US, Europe, and Japan. It is manufactured by the Chinese company Ebyte, and is RoHS compliant.