MY-BT104 is a cheap Bluetooth 5.2 low energy module. it supports GATT, HID and other profile for wireless data receive, and transmission. It’s a small size BLE module with PCB antenna.

Utilizing UART communication, the module facilitates user control over parameters like module names, baud rates, and more using AT commands. Out of the box, the default firmware enables seamless transmission and reception of BLE data, rendering it a fitting choice for diverse Bluetooth Low Energy devices like Bluetooth printers, barcode scanners, health and medical tools, OBD devices, smart home systems, and an array of wireless IoT devices.