Without button The HC-05 TTL Bluetooth Transceiver Module (Without Button) is a compact and reliable wireless communication module designed for serial data transmission in embedded systems.
It supports Bluetooth v2.0 + EDR, enabling stable communication between microcontrollers and Bluetooth-enabled devices such as smartphones and laptops.
Unlike standard HC-05 boards, this version comes without an onboard push button, making it suitable for custom PCB integration and space-constrained designs.
The module communicates using a TTL UART interface, allowing easy connection to Arduino, AVR, PIC, ARM, and other microcontrollers.
It can operate in both Master and Slave modes, offering greater flexibility than HC-06 modules.
Configuration is done through AT commands, enabling changes to baud rate, device name, pairing password, and operating mode.
