HLK-B50 BLE 5.0 Bluetooth TTL Module

The HLK-B50 BLE 5.0 Bluetooth TTL Module is a compact, low-power Bluetooth Low Energy module with a UART (TTL) serial interface for easy wireless data transmission. Supporting Bluetooth 5.0, it offers improved range, stability, and power efficiency, making it ideal for IoT nodes, smart sensors, and embedded wireless links. The on-board PCB antenna and AT-command firmware enable quick integration into MCU-based designs.

Technical Specifications:

• Bluetooth standard: BLE 5.0
• Interface: UART (TTL)
• Operating voltage: 3.3 V DC
• Logic level: 3.3 V
• Frequency band: 2.4 GHz ISM
• Range: Up to ~50 m (open area, environment dependent)
• Antenna: On-board PCB antenna
• Firmware: AT commands supported
• Buttons: EN / RESET (on-board)
• Mounting: Through-hole pins
• PCB material: FR-4

Features:

• Bluetooth 5.0 for better range and reliability
• Low power consumption for battery-powered devices
• Simple UART integration with MCUs
• AT command configuration
• Compact footprint with integrated antenna
• Stable wireless communication
• Suitable replacement for BLE 4.x TTL modules

Applications:

• IoT and smart home devices
• Wireless sensor nodes
• Data logging and monitoring
• Industrial wireless links
• Home automation controllers
• DIY and educational projects